2
insignificant
2
secondary
2
accessorial
2
not helpful
2
procedural
2
surplus(adjective, extra, wanting)
2
trivial(adjective, substantial, serious)
2
unconnected
2
unnecessary
2
visceral
1
half ass
1
accessory(noun, adjective, unimportant, extra, fundamental)
1
extraneous(adjective, unneeded)
1
adjective(noun, adjective)
1
dispensable
1
inconsequential
1
alien
1
dependent(adjective, importance, valuable, duty, reliable)
1
add-on
1
adventitious
10 years ago|4.4k views|share |citing 
APASmart Define. (2016). essential thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/essential/thesaurus/antonyms
ChicagoSmart Define. 2016. "essential thesaurus" https://smartdefine.org/essential/thesaurus/antonyms (accessed September 23, 2026).
HarvardSmart Define 2016, essential thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/essential/thesaurus/antonyms>.
MLASmart Define. "essential thesaurus" 31 March 2016. Web. 23 September 2026. <https://smartdefine.org/essential/thesaurus/antonyms>