Expressions of Doubt and Uncertainty
Grammar Rule in 30 Seconds
Use verbs like 'sumnjati' or particles like 'valjda' to express doubt, often requiring the conjunction 'da' or 'li'.
- Use 'sumnjam da...' for 'I doubt that...' followed by the indicative. (Sumnjam da će kišiti.)
- Use 'li' for 'whether' in indirect questions of uncertainty. (Ne znam hoće li doći.)
- Add particles like 'valjda' or 'možda' to soften statements. (On je valjda kod kuće.)
Common Verbs of Doubt (Present Tense)
| Person | Sumnjati (to doubt) | Dvojiti (to hesitate) | Vjerovati (to believe) |
|---|---|---|---|
|
Ja
|
sumnjam
|
dvojim
|
vjerujem
|
|
Ti
|
sumnjaš
|
dvojiš
|
vjeruješ
|
|
On/Ona/Ono
|
sumnja
|
dvoji
|
vjeruje
|
|
Mi
|
sumnjamo
|
dvojimo
|
vjerujemo
|
|
Vi
|
sumnjate
|
dvojite
|
vjerujete
|
|
Oni/One/Ona
|
sumnjaju
|
dvoje
|
vjeruju
|
Modal Particles for Uncertainty
| Particle | Meaning | Example |
|---|---|---|
|
Možda
|
Maybe
|
Možda dođem.
|
|
Valjda
|
Presumably / I guess
|
Valjda znaš.
|
|
Vjerojatno
|
Probably
|
Vjerojatno kasne.
|
|
Navodno
|
Allegedly
|
Navodno su otišli.
|
|
Zacijelo
|
Surely / Likely (formal)
|
On zacijelo spava.
|
Meanings
This grammar pattern allows speakers to convey a lack of certainty, skepticism, or a low degree of probability regarding an event or statement.
Direct Doubt
Explicitly stating that you do not believe something is true using the verb 'sumnjati'.
“Sumnjam da je to istina.”
“Sumnjam u njegove namjere.”
General Uncertainty
Expressing a lack of knowledge or a 'maybe' feeling using 'ne znam' or 'nisam siguran'.
“Nisam siguran trebamo li krenuti.”
“Ne znam gdje su ključevi.”
Softened Probability
Using modal particles to suggest something is likely but not guaranteed.
“Valjda će sve biti u redu.”
“Vjerojatno su zaboravili.”
Skeptical Distance
Distancing oneself from a claim made by others, often using 'navodno'.
“On je navodno dobio otkaz.”
“Navodno se sele u Njemačku.”
Reference Table
| Type | Structure | Example |
|---|---|---|
|
Direct Doubt
|
Sumnjam da + [Clause]
|
Sumnjam da će doći.
|
|
Indirect Question
|
[Verb] + [Verb] + li + [Subject]
|
Ne znam dolazi li on.
|
|
Noun Doubt
|
Sumnjati u + [Accusative]
|
Sumnjam u tvoju priču.
|
|
Negative Belief
|
Ne vjerujem da + [Clause]
|
Ne vjerujem da je istina.
|
|
Probability
|
[Subject] + valjda + [Verb]
|
On valjda zna put.
|
|
Formal Doubt
|
Dvojbeno je + [Conditional]
|
Dvojbeno je bi li uspjeli.
|
|
Rumor
|
Navodno + [Verb]
|
Navodno se razvode.
|
|
Wondering
|
Pitam se + [Verb] + li
|
Pitam se je li skupo.
|
Spectre de formalité
Neizvjesno je hoće li dotični gospodin nazočiti. (Social attendance)
Ne znam hoće li on doći. (Social attendance)
Ko zna oće l' doć. (Social attendance)
Pitanje je oće l' se lik nacrtat. (Social attendance)
The Spectrum of Certainty
High Certainty
- Sigurno Surely
- Znam I know
Moderate Doubt
- Vjerojatno Probably
- Valjda Presumably
High Doubt
- Sumnjam I doubt
- Teško da Hardly
Da vs. Li in Uncertainty
Choosing the Right Expression
Are you doubting a fact?
Are you wondering about a 'yes/no'?
Common Doubt Verbs
Verbs
- • Sumnjati
- • Dvojiti
- • Pitati se
Adverbs
- • Možda
- • Valjda
- • Navodno
Phrases
- • Tko zna
- • Nisam siguran
- • Teško da
Exemples par niveau
Ne znam.
I don't know.
Možda on dolazi.
Maybe he is coming.
Nisam siguran.
I am not sure.
Gdje je Marko? Ne znam.
Where is Marko? I don't know.
Nisam sigurna je li on kod kuće.
I am not sure if he is at home.
Mislim da on ne zna.
I think that he doesn't know.
Vjerojatno ćemo zakasniti.
We will probably be late.
On valjda spava.
He is presumably sleeping.
Ne vjerujem da će sutra biti sunčano.
I don't believe it will be sunny tomorrow.
Pitam se hoće li nam se javiti.
I wonder if they will contact us.
Teško da ćemo stići na vrijeme.
It's unlikely we'll arrive on time.
Čini mi se da nešto nije u redu.
It seems to me that something isn't right.
Sumnjam da su oni svjesni problema.
I doubt that they are aware of the problem.
Dvojim oko toga trebamo li prihvatiti ponudu.
I am hesitant about whether we should accept the offer.
Navodno su se već dogovorili.
Allegedly, they have already agreed.
Postoji sumnja da je dokument lažan.
There is a doubt that the document is fake.
Dvojbeno je bi li takva mjera urodila plodom.
It is questionable whether such a measure would yield results.
Iskreno, gajim određenu skepsu prema tom planu.
Honestly, I harbor a certain skepticism toward that plan.
Pitanje je u kojoj je mjeri to uopće izvedivo.
The question is to what extent that is even feasible.
Malo je vjerojatno da će se situacija ubrzo stabilizirati.
It is unlikely that the situation will stabilize soon.
Njegove su tvrdnje u najmanju ruku upitne.
His claims are, to say the least, questionable.
Teško je sa sigurnošću utvrditi vjerodostojnost tih navoda.
It is difficult to establish the credibility of those allegations with certainty.
Sve to skupa zvuči kao 'što bi bilo kad bi bilo'.
All of that sounds like 'what if' scenarios (pure speculation).
Dovodi se u pitanje sama srž njihovog argumenta.
The very core of their argument is being called into question.
Facile à confondre
Learners mix up the prepositions 'u' and 'na' with the verb 'sumnjati'.
Using 'ako' (if) to translate 'whether' in indirect questions.
Using 'vjerovati' for simple opinions.
Erreurs courantes
Ja ne znam gdje on je.
Ne znam gdje je on.
Možda on je tu.
Možda je on tu.
Ja sumnjam.
Sumnjam.
Nisam siguran za to.
Nisam siguran u to.
Ne znam ako on dolazi.
Ne znam dolazi li on.
Pitam se li je on tu.
Pitam se je li on tu.
On vjerojatno je umoran.
On je vjerojatno umoran.
Sumnjam da on će doći.
Sumnjam da će on doći.
Ne vjerujem on.
Ne vjerujem mu.
To je navodno istina.
To je navodno istina.
Dvojim da li...
Dvojim li...
Sumnjam na njega.
Sumnjam u njega.
Structures de phrases
Sumnjam da će ___.
Nisam siguran/sigurna ___ li ___.
Navodno je ___.
Dvojbeno je bi li ___.
Real World Usage
Valjda se vidimo kasnije!
Nisam sasvim siguran u vezi s tim, mogu li provjeriti?
Čisto sumnjam da je ovaj video stvaran.
Navodno je došlo do promjene plana.
Dvojbeno je jesu li rezultati statistički značajni.
Nisam siguran što bih uzeo, što preporučujete?
The 'Li' Shortcut
Avoid 'Ako'
Softening with 'Valjda'
Sumnjati vs. Sumnjičiti
Smart Tips
Always use 'Pitam se' followed by the verb and 'li'.
Try removing the 'da' and moving the 'li' after the verb for a more 'Croatian' sound.
Add the word 'čisto' (purely) before 'sumnjam'.
Start the sentence with 'Navodno'.
Prononciation
Enclitic Stress
The particle 'li' is an enclitic, meaning it has no stress of its own and 'leans' on the word before it.
Valjda Intonation
When 'valjda' is used to express hope, the pitch rises at the end. When expressing annoyance, it falls.
The Questioning Doubt
Znaš li? (↗)
Rising intonation on 'li' indicates a genuine question of uncertainty.
Mémorise-le
Moyen mnémotechnique
Sumnjam starts with 'S' like 'Skeptic'. Use 'da' for thoughts, 'li' for questions.
Association visuelle
Imagine a person standing at a crossroads with a giant question mark above their head. One path is labeled 'DA' (the fact they doubt) and the other is 'LI' (the question they are asking).
Rhyme
Kad sumnjaš ti, koristi li, kad misliš da, koristi da.
Story
Marko was 'siguran' (sure) about his keys. Then he became 'sumnjičav' (suspicious). He said, 'Sumnjam da su u autu.' He asked, 'Znaš li gdje su?' Finally, he sighed, 'Valjda ću ih naći.'
Word Web
Défi
Write three sentences about tomorrow's weather using 'sumnjam da', 'vjerojatno', and 'pitam se hoće li'.
Notes culturelles
Croatians often use 'valjda' to avoid sounding too assertive or aggressive. It's a form of social 'softening'.
In Dalmatia, 'ko zna' (who knows) is used frequently as a philosophical response to almost any uncertainty.
Using 'brija' or 'brijem' (I'm vibing/thinking) is a slang way to express a personal, uncertain opinion.
The word 'sumnja' comes from the Proto-Slavic *sъmьněti, related to 'mniti' (to think).
Amorces de conversation
Što misliš, hoće li sutra padati kiša?
Sumnjaš li ikada u svoje odluke?
Što je po tvom mišljenju navodno istina, ali ti ne vjeruješ?
Pitaš li se ikada kako će svijet izgledati za 50 godina?
Sujets d'écriture
Erreurs courantes
Test Yourself
Sumnjam ___ će on doći na vrijeme.
Pitam se...
Find and fix the mistake:
Ne znam ako je on tu.
On će pobijediti.
Match each item on the left with its pair on the right:
A: Hoće li Marko doći? B: ___.
In Croatian, you must use the subjunctive mood after 'Sumnjam da'.
li / se / pitam / istina / je / to
Score: /8
Exercices pratiques
8 exercisesSumnjam ___ će on doći na vrijeme.
Pitam se...
Find and fix the mistake:
Ne znam ako je on tu.
On će pobijediti.
1. Navodno, 2. Valjda, 3. Teško da
A: Hoće li Marko doći? B: ___.
In Croatian, you must use the subjunctive mood after 'Sumnjam da'.
li / se / pitam / istina / je / to
Score: /8
FAQ (8)
Yes, `da li` is common, but in standard Croatian, especially in writing, using just `li` after the verb is preferred (e.g., `Znaš li?` instead of `Da li znaš?`).
`Sumnja` is general doubt or suspicion. `Dvojba` is specifically being 'of two minds' or hesitating between choices.
No, `valjda` is quite informal and conversational. In formal writing, use `vjerojatno` or `zacijelo`.
Because `ako` is for conditions (If X happens, then Y). `Sumnjam` requires a complement clause starting with `da`.
Only when followed by a noun or pronoun (e.g., `Sumnjam u tebe`). If followed by a verb, use `da` (e.g., `Sumnjam da znaš`).
Use `pretpostavljam` (I assume) or `naslućujem` (I sense/suspect). `Sumnjam` is almost always negative.
It implies that you are repeating what others say but you don't necessarily vouch for its truth.
No, `možda` is an adverb and doesn't trigger the `li` particle. You just say `Možda on zna`.
Scaffolded Practice
1
2
3
4
Mastery Progress
Needs Practice
Improving
Strong
Mastered
In Other Languages
I doubt that / I wonder if
Croatian uses 'li' word order, English uses 'if' + subject + verb.
Dudo que + Subjunctive
No subjunctive mood in Croatian for doubt.
Ich bezweifle, dass / ob
German verb-final word order in subordinate clauses.
～かどうか (~ka dou ka)
Sentence-final vs. sentence-initial expression of doubt.
أشك أن (ashukku anna)
Arabic root system vs. Slavic conjugation.
我怀疑 (Wǒ huáiyí)
Lack of grammatical particles like 'li' in Chinese.
