23 entries under noun topic. ×

2
inability
2
incapacity
2
ineptitude
1
awkwardness
1
clumsiness
1
inadequacy
1
incompetence
1
ineptness
1
maladroitness
0
backwardness
0
deliberateness
0
deliberation
0
disqualification
0
inaptitude
0
incompetency
0
inconvenience
0
lack
0
retardation
0
slowness
0
stiffness
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APASmart Define. (2015). adeptness thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/adeptness/thesaurus/antonyms
ChicagoSmart Define. 2015. "adeptness thesaurus" https://smartdefine.org/adeptness/thesaurus/antonyms (accessed September 28, 2026).
HarvardSmart Define 2015, adeptness thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/adeptness/thesaurus/antonyms>.
MLASmart Define. "adeptness thesaurus" 13 April 2015. Web. 28 September 2026. <https://smartdefine.org/adeptness/thesaurus/antonyms>