entries → 理由
TSUMUGU · TOCFL 4 (est.) · 詞
理由 word · TOCFL 4 (est.)
理由 =
ㄌㄧˇ ㄧㄡˊ · lǐyóu
noun — reason; grounds; justification

字源 FORM — what the parts do

reason, principle (道理)
cause, from (由來)yóu
理由,道理的理,由來的由。