Any stupid simpleton is initially (3)

I believe the answer is:

ass

I'm a little stuck... Click here to teach me more about this clue!

'any stupid simpleton is initially' is the definition.
I can't judge whether this defines the answer.

'any stupid simpleton is initially' is the wordplay.
'is initially' indicates taking the first letters.
The initial letters of 'any stupid simpleton' is 'ASS'.

Can you help me to learn more?

(Other definitions for ass that I've seen before include "Jennet" , "Buffoon" , "Quadruped; fool" , "A donkey or an idiot" , "Braying animal" .)

I've seen this clue in The Globe and Mail.

Want a hint initially instead of a full solution? Install my app