intentional
I've never hurt anybody intentionally in my life.
It is a crime to intentionally hold back evidence.
We don't know whether this was done intentionally or accidentally.

SMART Vocabulary: related words and phrases

Planning, expecting and arranging
accidentally
accidentally on purposeidiom
advertent
advisedly
aim at something
bargain
conscious
game something out
have something in mindidiom
have something up your sleeveidiom
horizon scanning
how are you fixed for something?idiom
pencil
provident
providently
provision
purpose
purposefully
purposely
settle