Synonyms for Unsatisfactory:

adj.

bad (adjective)
faulty, defective, wretched, bad, inadequate, arrant, wrong, invalid, detrimental, poor, unpleasant, baneful, displeasing, irremediable, unsound, black, ill-suited, inadvisable, vile, inferior, unfavorable.
deficient (adjective)
incomplete.
deplorable (adjective)
wretched.
incomplete (adjective)
insufficient, fragmentary, embryonic, unattained, unachieved, fractional, incomplete, unfulfilled, scanty, deficient, Curtailed, lacking, patchy, partial, unfinished, sectional, undone, discontinuous, missing, immature, segmental, short, Unaccomplished.
inexpedient (adjective)
undesirable, unsuitable, disadvantageous, untimely, inefficient, inexpedient, inept, inconvenient, unfit, delinquent, mistimed.
insufficient (adjective)
insufficient.
insufficient, inadequate (adjective)
distressing, unacceptable, vexing, offensive, bad, undesirable, poor, disquieting, disappointing, unsuitable, displeasing, wrong, upsetting, disturbing, regrettable, disconcerting, deficient, unwelcome.
limited (adjective)
limited.
unacceptable (adjective)
unacceptable, inappropriate, untenable, unsuitable, intolerable, inadmissible, inadequate, deficient, inferior, insufficient.

n.

limited, average, undistinguished. bum, good. help, negative, adverse, untoward, unadvantageous. unsatisfactory (noun)
dissatisfactory, bad, failing, disappointing, unacceptable, off, unsatisfying.

v.

disappointing (verb)
disturbing, shocking, below expectation, vexing, disquieting, disconcerting, upsetting, distressing, unwelcome, disagreeable, offensive, regrettable.

Other synonyms:

undistinguished, unadvantageous. limited. adverse, untoward. negative. Other relevant words:
distressing, disconcerting, shocking, good, regrettable, offensive, undistinguished, limited, off, untoward, bum, unsatisfying, disquieting, help, disappointing, failing, dissatisfactory, disturbing, disagreeable, adverse, vexing, unwelcome, upsetting, average, negative, unadvantageous.

Usage examples for unsatisfactory

  1. " But that is very unsatisfactory – The Mystery of 31 New Inn by R. Austin Freeman
  2. Salicetti declined my brother's assistance is the examination of the papers, and after a second examination, which was probably as unsatisfactory as the first, he seated himself with a very abstracted air. – The Project Gutenberg Memoirs of Napoleon Bonaparte by Bourrienne, Constant, and Stewarton
  3. " Unsatisfactory as usual," was the answer. – The Three Lieutenants by W.H.G. Kingston