不安【ふあん】
anxiety, uneasiness, worry, apprehension, fear, insecurity, suspense
不思議【ふしぎ】
wonderful, marvelous, strange, incredible, amazing, curious, miraculous, mysterious, strangely enough, oddly enough, for some reason, curiously
不明【ふめい】
unclear, obscure, indistinct, uncertain, ambiguous, unknown, unidentified, ignorance, lack of wisdom, lack of insight
不可能【ふかのう】
impossible
不満【ふまん】
dissatisfaction, discontent, displeasure, complaint, unhappiness
不要【ふよう】
unnecessary, unneeded
不幸【ふこう】
unhappiness, sorrow, misfortune, disaster, accident, death (usu. of a relative), bereavement
不足【ふそく】
insufficiency, deficiency, shortage, lack, scarcity, deficit, dissatisfaction, discontent, complaint
行方不明【ゆくえふめい】
missing (of a person), lost, unaccounted for, whereabouts unknown
不良【ふりょう】
bad, poor, inferior, defective, delinquent, hoodlum, hooligan
不正【ふせい】
injustice, unfairness, wrongdoing, iniquity, impropriety, irregularity, dishonesty, illegality, fraud
不利【ふり】
disadvantage, handicap, unfavorable position
不安定【ふあんてい】
instability, insecurity, crankiness
不在【ふざい】
absence, disregard, indifference
不気味【ぶきみ】
weird, eerie, ominous, creepy, uncanny, unearthly
不能【ふのう】
impossible, incapable (of doing), unable (to do), incompetence, inability, impotence, having no solution (of an equation)
不公平【ふこうへい】
unfairness, injustice, partiality
不快【ふかい】
displeasure, discomfort, unpleasantness, indisposition, ailment
不倫【ふりん】
adultery, impropriety, (an) affair, immorality
不動産【ふどうさん】
real estate