Considered meeting everyone initially on a certain day (8)
I believe the answer is:
measured
'considered' is the definition.
(thesaurus)
'meeting everyone initially on a certain day' is the wordplay.
'initially' suggests taking the first letters.
'on' is a charade indicator (letters next to each other).
'certain' becomes 'sure' (synonyms).
'day' becomes 'd' (abbreviation for day).
The initial letters of 'meeting everyone' is 'me'.
'me'+'a'+'sure'+'d'='MEASURED'
(Other definitions for measured that I've seen before include "Rhythmical, regular in movement" , "Sized; carefully chosen" , "Regular in movement or carefully considered" , "Determine dimensions" , "Calculated amount" .)