How to pronounce“obtuse”in English

They purposely were obtuse and hard to explain.

The more dense and obtuse it is, just be on guard.

This footnote is deliberately obtuse.

Perhaps I was being obtuse, but I could not divine any concrete advice for dealing with the voice in the head.

she's really obtuse no and then you tell her actually you know here is the the

They have to be obtuse enough to make you work for it, but elegant enough so you can get to the aha moment,

then it's too obtuse or esoteric and it hasn't been refined enough yet.