assurance

1 a state of mind in which one is free from doubt I can state with complete assurance that no harm will ever come to you Synonyms confidence, assuredness, certainty, certitude, cocksureness, conviction, doubtlessness, face, positiveness, satisfaction, sureness, suretyRelated Words authoritarianism, dogmatism; decisiveness, determination, firmness, purposefulness, resoluteness, resolution, resolveNear Antonyms hesitancy, hesitation, indecisiveness, irresolution; disbelief, incredulity, unbelief; anxiety, concern, misgiving; distrust, mistrust, suspicionAntonyms doubt, incertitude, nonconfidence, uncertainty

2 great faith in oneself or one's abilities her assurance was evident in the way she carried herself onto the playing field Synonyms aplomb, confidence, self-assurance, self-assuredness, self-confidence, self-esteem, self-trustRelated Words cockiness, complacence, complacency, conceit, conceitedness, ego, egoism, egotism, hubris, overconfidence, pomposity, pompousness, pride, pridefulness, self-admiration, self-applause, self-assumption, self-complacency, self-conceit, self-consequence, self-content, self-contentment, self-glorification, self-importance, self-opinion, self-partiality, self-satisfaction, smugness, vaingloriousness, vainglory, vanity; calmness, composure, coolness, equanimity; self-poise, self-possession; assumption, bumptiousness, haughtiness, hauteur, huffiness, imperiousness, loftiness, lordliness, peremptoriness, presumptuousness, pretentiousness, superciliousness, superiority, toploftinessNear Antonyms apprehension, doubt, misgivingAntonyms diffidence, insecurity, self-distrust, self-doubt