理由【りゆう】
reason, pretext, motive
管理【かんり】
control, management (e.g. of a business)
理事【りじ】
director, trustee
総理【そうり】
prime minister (as the head of a cabinet government), premier, leading, overseeing, leader, overseer, president
処理【しょり】
processing, dealing with, treatment, disposition, disposal
料理【りょうり】
cooking, cookery, cuisine, meal, food, dish, item on a menu, (easily) dealing with something, handling (well)
理解【りかい】
understanding, comprehension, appreciation, sympathy
代理【だいり】
representation, agency, proxy, proxy, agent, representative, deputy, substitute, surrogate, stand-in
倫理【りんり】
ethics, morals
理念【りねん】
(Platonic) ideal (of how things ought to be, e.g. human rights), foundational principle, idea, conception (e.g. of the university), doctrine, ideology
心理【しんり】
state of mind, mentality, psychology
原理【げんり】
principle, theory, fundamental truth
理論【りろん】
theory
無理【むり】
unreasonable, unnatural, unjustifiable, impossible, forcible, forced, compulsory, excessive (work, etc.), immoderate, to work too hard, to try too hard, no way, not a chance, never, dream on, irrational
整理【せいり】
sorting, arrangement, organization, putting in order, adjustment, regulation, liquidation, settlement, consolidation, clearance (e.g. debt), paying off, retrenchment, curtailment, cutting down, disposal
論理【ろんり】
logic
理想【りそう】
ideal, ideals
合理化【ごうりか】
rationalization, rationalisation, rationalize, rationalise
修理【しゅうり】
repair, mending, fixing, servicing
調理【ちょうり】
cooking, food preparation