10 entries under heedless topic. ×

6
arrogant(adjective, self-assured, self-confident, presumptuous)
4
big-headed(adjective, self-assertive, over-confident)
4
conceited(adjective, self-assured, self-confident, presumptuous)
4
egocentric(adjective, self-assertive, over-confident)
3
loud(adjective, self-assertive, over-confident)
3
proud(adjective, self-assertive, over-confident)
3
vain(adjective, self-assured, cocksure, self-assertive)
2
immodest(adjective, impudent, cocksure, self-assertive)
1
patronizing(adjective, self-assertive, over-confident)
1
superior(adjective, self-assertive, over-confident)
56 years ago|0 views|share |citing 
APASmart Define. (1970). over smart thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/over_smart/thesaurus/synonyms
ChicagoSmart Define. 1970. "over smart thesaurus" https://smartdefine.org/over_smart/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 1970, over smart thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/over_smart/thesaurus/synonyms>.
MLASmart Define. "over smart thesaurus" 1 January 1970. Web. 23 September 2026. <https://smartdefine.org/over_smart/thesaurus/synonyms>