DISAPPOINTING
disappointing, dissatisfactory, unsatisfying
(adjective) not up to expectations; “a disappointing performance from one who had seemed so promising”
Source: WordNet® 3.1
Adjective
disappointing (comparative more disappointing, superlative most disappointing)
Causing disappointment.
Synonyms
• See also disheartening
Verb
disappointing
present participle of disappoint
Source: Wiktionary
DISAPPOINT
Dis`ap*point", v. t. [imp. & p. p. Disapointed; p. pr. & vb. n.
Disappointing.] Etym: [OF. desapointier, F. désappointer; pref. des-
(L. dis-) + apointier, F. appointier, to appoint. See Appoint.]
1. To defeat of expectation or hope; to hinder from the attainment of
that which was excepted, hoped, or desired; to balk; as, a man is
disappointed of his hopes or expectations, or his hopes, desires,
intentions, expectations, or plans are disappointed; a bad season
disappoints the farmer of his crops; a defeat disappoints an enemy of
his spoil.
I was disappointed, but very agreeably. Macaulay.
Note: Disappointed of a thing not obtained; disappointed in a thing
obtained.
2. To frustrate; to fail; to hinder of result.
His retiring foe Shrinks from the wound, and disappoints the blow.
Addison.
Syn.
– To tantalize; fail; frustrate; balk; baffle; delude; foil;
defeat. See Tantalize.
Source: Webster’s Unabridged Dictionary 1913 Edition