The Oxford Thesaurus An A-Z Dictionary of Synonyms INTRO ...

unwholesome
adj. 1 unhealthy, unhealthful, detrimental, deleterious,
pernicious, insalubrious, unhygienic, insalutary, harmful,
noxious, toxic, injurious, destructive: Fernthwaite finally
succumbed to the unwholesome climate and had to be sent home. 2
corrupt, immoral, bad, wicked, evil, sinful, perverted;
demoralizing, depraved, degrading, corrupting, perverting: The
social worker said it was wrong for a child to be raised in such
an unwholesome atmosphere. 3 ill, ailing, sickly, sick, pale,
wan, anaemic, pallid, pasty: Their unwholesome complexion comes
from malnutrition.
unwieldy adj. awkward, clumsy, bulky, oversized, cumbersome, ungainly,
unmanageable, unhandy, unmanoeuvrable: The huge oil tankers,
though economical, often proved unwieldy in the ports they
visited.
unwonted adj. infrequent, unusual, uncustomary, uncommon, unfamiliar,
unprecedented, rare, singular, atypical, abnormal, peculiar,
odd, strange, irregular, unconventional, unorthodox: All this
unwonted physical exercise made them exhausted by evening.
unworthy adj. 1 unequal, meritless, unmerited, substandard, inferior,
second-rate, menial, puny, petty, paltry, unprofessional,
mediocre, despicable, contemptible, dishonourable, ignoble,
disreputable, discreditable, unqualified, ineligible, unfit,
undeserving: I consider Patrick an unworthy opponent. 2
unworthy of. unbecoming to, inappropriate to, unsuitable for,
unfit for, out of character for, inconsistent with or for, out
of place with or for, incongruous with or for: That sort of
petty haggling is unworthy of your position and of you.
21.5 upbeat...
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upbeat adj. positive, optimistic, sanguine, favourable, cheerful,
encouraging, heartening, buoyant, light-hearted: Christopher
has a very upbeat attitude towards life despite his age.
upbraid v. scold, rebuke, reprimand, reproach, berate, castigate,
chastise, reprove, chide, censure, take to task, Colloq tell
off, tick off, dress down, give a dressing-down, give (someone)