Disappointment adjectives are listed in this post. Each word below can often be found in front of the noun disappointment in the same sentence. This reference page can help answer the question what are some adjectives commonly used for describing DISAPPOINTMENT.
acute, agreeable, angry, apparent, awful, big, biggest, bitter, bitterest, blank, certain, complete, consequent, considerable, constant, continual, continued, cruel, deep
deepest, distinct, double, dreadful, early, enormous, evident, express, extreme, final, first, former, frequent, fresh, further, future, general, genuine, grave
great, greater, greatest, grievous, heavy, huge, immediate, immense, inevitable, initial, intense, keen, keenest, last, late, less, little, long, major
mere, mild, mock, momentary, more, mortifying, much, mutual, natural, new, obvious, occasional, only, own, painful, particular, perpetual, personal, political
possible, present, previous, professional, profound, public, real, recent, repeated, romantic, sad, same, second, secret, serious, severe, sharp, sickening, similar
slight, slightest, small, sore, subsequent, such, sudden, sullen, temporary, terrible, total, tremendous, ultimate, unexpected, utter, vague, widespread
Hope this word list had the adjective used with disappointment you were looking for. Additional describing words / adjectives that describe / adjectives of various nouns can be found in the other pages on this website.