Read Edit View history 防患未然 fánghuànwèirán forestall Origin Definitions Defs Strokes Stroke Words Sentences Sents created sense approved 防患未然 · fánghuànwèirán · forestall 2026/03/04 防患未然 fánghuànwèirán forestall to take preventive measures against possible trouble before it occurs; to nip something in the bud 为了确保实验室安全，必须定期检查设备以防患未然。 idiom created sense Mar 4, 2026, 02:25 AM