Which word do you use...?
Which word do you use most often?

"painkiller" or "analgesic"

I feel terrible to pronounce "anal...",
because "anal" is same as "asshole"

Dose the female avoid to say "analgesic"?

Question

Which word do you use...?
Which word do you use most often?

"painkiller" or "analgesic"

I feel terrible to pronounce "anal...",
because "anal" is same as "asshole"

Dose the female avoid to say "analgesic"?

Answer

Painkiller is more commonly used as explained above, but 
I should mention that analgesic does not sound like anal because we pronounce anal or anus (the proper word for asshole) with a long a sound as in ape and analgesic with a short a sound as in apple.  So, if you want to sound more scientific, go for it!

Answer

I can't choose a best answer.
All answers is useful for me.

Answer

painkiller

Answer

The word "painkiller" is more commonly used.  It is common knowledge versus the medical verbiage of analgesic.