12
convenient(adjective, appropriate, useful)
8
opportune(adjective, advantageous, lucky)
6
timely(adjective, untimely)
5
happy
4
good
4
lucky(adjective, fortunate, opportune, unlucky)
4
symbiotic
3
behindhand
3
felicitous(adjective, appropriate, suitable, unsuitable)
3
opportunistic
3
right
3
ripe(adjective, ideal, favorable)
3
seasonable
2
appropriate
2
auspicious(adjective, unsuitable, favorable, encouraging)
2
belated
2
delinquent
2
fortunate
2
late
2
latish
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APASmart Define. (2015). inopportune thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/inopportune/thesaurus/antonyms
ChicagoSmart Define. 2015. "inopportune thesaurus" https://smartdefine.org/inopportune/thesaurus/antonyms (accessed September 27, 2026).
HarvardSmart Define 2015, inopportune thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/inopportune/thesaurus/antonyms>.
MLASmart Define. "inopportune thesaurus" 14 April 2015. Web. 27 September 2026. <https://smartdefine.org/inopportune/thesaurus/antonyms>