Figure a kiss remiss (3)
I believe the answer is:
lax
'remiss' is the definition.
(thesaurus)
'figure a kiss' is the wordplay.
'figure' becomes 'l' (I've seen this in other clues).
'kiss' becomes 'x'.
'l'+'a'+'x'='LAX'
(Other definitions for lax that I've seen before include "Not sufficiently careful" , "without tension" , "Insufficiently strict" , "Slapdash" , "Slack, loose" .)