사무애지 (四無碍智)라고도 말함. 자유자재하며 거리낌이 없는 이해능력, 곧 지해 (智解) 및 언어적 표현능력, 곧 변재 (辯才)를 말함. 여기에는 의무애해 (義無碍解), 법무애해 (法無碍解), 사무애해 (辭無碍解), 그리고 변무애해 (辨無碍解) 등 네 가지가 있다. 보다 자세한 설명은 각 항목 참조
The four unobstructed knowledge, understanding, or wisdom: They are classified into four fields: Unobstructed analytical knowledge regarding meaning; unobstructed analytical knowledge of Dharmas; unobstructed mastery of language or rhetoric; and unobstructed mastery of eloquence. For further explanation, see each separate entries: (Uimuaehae) Complete understanding of the meaning of all the phenomena without hindrance, (Beopmuaehae) Unimpeded understanding of discerning the meaning of the illustrious teaching of the Dharma, (Samuaehae) Unimpeded mastery of speech in the choice of language and expression, and (Byeonmuaehae) Unimpeded eloquence in defending the arguments in any circumstance.