Synonyms/Hypernyms (Ordered by Estimated Frequency) of verb disappoint

1 sense of disappoint

Sense 1
disappoint, let down -- (fail to meet the hopes or expectations of; "Her boyfriend let her down when he did not propose marriage")
       => thwart, queer, spoil, scotch, foil, cross, frustrate, baffle, bilk -- (hinder or prevent (the efforts, plans, or desires) of; "What ultimately frustrated every challenger was Ruth's amazing September surge"; "foil your opponent")

Antonyms of adj disappointed

1 sense of disappointed

Sense 1
defeated, disappointed, discomfited, foiled, frustrated, thwarted -- (disappointingly unsuccessful; "disappointed expectations and thwarted ambitions"; "their foiled attempt to capture Calais"; "many frustrated poets end as pipe-smoking teachers"; "his best efforts were thwarted")

INDIRECT (VIA unsuccessful) -> successful -- (having succeeded or being marked by a favorable outcome; "a successful architect"; "a successful business venture")

Similarity of adj disappointed

1 sense of disappointed

Sense 1
defeated, disappointed, discomfited, foiled, frustrated, thwarted -- (disappointingly unsuccessful; "disappointed expectations and thwarted ambitions"; "their foiled attempt to capture Calais"; "many frustrated poets end as pipe-smoking teachers"; "his best efforts were thwarted")
       => unsuccessful (vs. successful) -- (not successful; having failed or having an unfavorable outcome)