Synonyms|496Antonyms|61|Broader|9Narrower|34Related|108
6
incompetence(noun, lack)
5
failure(noun, lack, incompetence)
5
inability(noun, lack, incompetence)
4
illiteracy
4
incapability(noun, lack, incompetence)
4
incapacity(noun, lack, incompetence)
4
incompetency
3
clumsiness(noun, lack, incompetence)
3
decline(noun, lack, incompetence)
3
feebleness
3
inadequacy
3
inaptitude
3
ineffectiveness
3
ineptitude
2
inexperience
1
amateurishness
1
artlessness
1
check
1
childishness
1
defeat
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APASmart Define. (2015). proficiency thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/proficiency/thesaurus/antonyms
ChicagoSmart Define. 2015. "proficiency thesaurus" https://smartdefine.org/proficiency/thesaurus/antonyms (accessed September 23, 2026).
HarvardSmart Define 2015, proficiency thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/proficiency/thesaurus/antonyms>.
MLASmart Define. "proficiency thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/proficiency/thesaurus/antonyms>