The four kinds of fearlessness, or courage, of which there are two groups: Buddha-fearlessness arises from his omniscience; perfection of character; overcoming opposition; and ending of suffering. Bodhisattva-fearlessness arises from powers of memory; of moral diagnosis and application of the remedy; of ratiocination; and of solving doubts. v. 智度論 48 and 5.

A Dictionary of Chinese Buddhist Terms, William Edward Soothill and Lewis Hodous

又名四無所畏，無畏是教化他人的心沒有懼怕。有佛四無畏與菩薩四無畏二種。見佛四無畏或菩薩四無畏條。

陳義孝編, 竺摩法師鑑定, 《佛學常見辭彙》