理屈【りくつ】
theory, reason, logic, (unreasonable) argument, strained logic, excuse, pretext
屈辱【くつじょく】
disgrace, humiliation
窮屈【きゅうくつ】
narrow, tight, cramped, formal, stiff, strict, ceremonious, rigid, constrained, uncomfortable, tight (e.g. finances)
不屈【ふくつ】
persistence, fortitude, indomitability
屈折【くっせつ】
bending, curving, twisting, turning, winding, warping (of feelings, logic, etc.), distortion, twisting, refraction, inflection
退屈【たいくつ】
tedious, boring, dull, uninteresting, tiresome, monotonous, to feel bored, to get bored (with), to get tired (of)
卑屈【ひくつ】
servile, subservient, obsequious, slavish, self-abasing, grovelling, spineless