Taunt Stoic regularly? Everyone must join in (5)
I believe the answer is:
tutti
'everyone must join in' is the definition.
I can't judge whether this definition defines the answer.
'taunt stoic regularly?' is the wordplay.
'regularly?' indicates alternate letters (I've seen 'regularly' mean this (regularly take one letter, leave next etc.)).
'taunt'+'stoic'='tauntstoic'
The alternating letters of 'tauntstoic' are 'TUTTI'.
Can you help me to learn more?
(Other definitions for tutti that I've seen before include "Musical instruction for all instruments to play" , "(Musically) performed by all instruments" , "All (stage direction)" , "All performers (mus.)" , "(Musically) all play together" .)