6
opportune(adjective, inopportune)
5
seasonable(adjective, unseasonable)
5
timely
4
happy
4
convenient
3
appropriate
3
belated
3
felicitous(adjective, appropriate, suitable, unsuitable)
3
overdue
3
tardy
2
as expected
2
good
2
hereby
2
time-sensitive
1
well-timed
0
advisable
0
anticipated
0
apposite
0
behindhand
0
delinquent
11 years ago|1.4k views|share |citing 
APASmart Define. (2015). untimely thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/untimely/thesaurus/antonyms
ChicagoSmart Define. 2015. "untimely thesaurus" https://smartdefine.org/untimely/thesaurus/antonyms (accessed September 21, 2026).
HarvardSmart Define 2015, untimely thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/untimely/thesaurus/antonyms>.
MLASmart Define. "untimely thesaurus" 13 April 2015. Web. 21 September 2026. <https://smartdefine.org/untimely/thesaurus/antonyms>