Synonyms of disappointing in English:

disappointing


See definition of disappointing

adjective

1‘the predominance of white, middle-class characters is disappointing’

SYNONYMS
saddening, disheartening, dispiriting, discouraging, upsetting, dismaying, depressing, distressing
disenchanting, disillusioning, dissatisfying
regrettable, unfortunate
ANTONYMS

encouraging, cheering

2‘Derry made a disappointing start’

SYNONYMS
unsatisfactory, inadequate, insufficient, unworthy, substandard, not good enough
poor, inferior, deficient, second-rate, pathetic, lame, pitiful
anticlimactic
informal below par, not up to scratch, not up to snuff, sorry, not all it's cracked up to be
British informal underwhelming, duff, ropy, rubbish
ANTONYMS

encouraging, satisfactory