自由 is pronounced じゆう, with both kanji using their on'yomi. じゆ (missing long vowel for 由) or しゆう (misreading 自) are common errors. It means freedom or liberty, the ability to act without restraint.
「自由 (じゆう)」は自も由も音読みです。「じゆ」(長音なし)や「しゆう」(自の誤読)は間違いです。束縛されずに思うままにできる状態を指します。
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