(informal, emphatic) Synonym of 万が一 (man ga ichi)

涯分: to the extent of one's abilities, as much as one can

外分: (geometry) exterior division given a line segment AB and a point P along the line but not included in segment AB, point P can be said to externally divide segment AB into segment PA and segment PB

外分: to divide externally

丸薬: a pill

doing something for someone without them knowing

岸壁: wharf; jetty

柵, 笧: a weir; a restraint, obstacle

据, 柵: a surname

to go crazy, to go mad