不 - negative, non-, bad

irregular; unsystematic; unsteady; disorderly

economic slump; hard times; depression; recession

pout; displeasure; ill humor; ill humour; sullenness

inexperienced; unfamiliar (with); unversed; lacking experience

everlasting; immortal; eternal; enduring; undying; imperishable

imbalance; lack of balance; lopsidedness; disproportion; inequality; disparity

instability; insecurity; crankiness

atomic; indivisibility

unfairness; injustice; partiality

inviolability; nonaggression; sacredness

clumsy; awkward; unskillful

unclean; dirty; unsanitary; filthy