Another kiss? Tense during important date (5)
I believe the answer is:
extra
'another' is the definition.
(I've seen this before)
'kiss? tense during important date' is the wordplay.
'kiss?' becomes 'x' (X can represent a kiss).
'tense' becomes 't' (abbreviation used in many dictionaries).
'during' indicates putting letters inside.
'important date' becomes 'era' (I've seen this before).
'x'+'t'='xt'
'xt' put inside 'era' is 'EXTRA'.
(Other definitions for extra that I've seen before include "Minor actor in crowd scene" , "Additional - bye" , "outside" , "Exceptionally" , "Small part actor" .)