ไม่ค่อยชอบเท่าไหร่

Yes, but it's quite strong. Saying 'I don't really like him that much' is still a negative judgment. Use it only with close friends.

No, but without it, the phrase is slightly more direct. 'ไม่ค่อยชอบ' is fine, but 'ไม่ค่อยชอบเท่าไหร่' is the gold standard for politeness.

Even then, if you want to be polite, you still use this phrase. To show you really hate it, you might add 'เลย' (loei) at the end: 'ไม่ค่อยชอบเท่าไหร่เลย'.

Yes! 'ไม่ค่อยอยากไปเท่าไหร่' (I don't really want to go that much) is a very common way to decline an invitation.

It's neutral. You can use it with your boss, your parents, or your friends. It's the 'safe' choice.

In Thai culture, 'ไม่ชอบ' can sound like a slap in the face. It's too blunt and lacks 'Kreng Jai'.

Technically yes, but pragmatically, it usually means you don't like it at all. It's a polite lie.

In casual speech, most Thais drop the 'R' sound. It sounds like 'tâo-ài'.

Yes, it's very common in text messages, emails, and social media comments.

The opposite would be 'ชอบมาก' (like a lot) or 'ค่อนข้างชอบ' (quite like).

Yes. 'ไม่ค่อยสวยเท่าไหร่' (not that beautiful) or 'ไม่ค่อยแพงเท่าไหร่' (not that expensive).

All the time! It's a staple of Thai dialogue to show a character's social grace or hesitation.