足し たし Meanings Noun supplement; top up; complement; making up (a deficiency) See also: 足しになる (たしになる). Kanji 足 foot. Read as たる. Common phrases 足しにする (たしにする) to make up (a deficiency) 足しになる (たしになる) to be of help Words containing 足し 足し算 (たしざん) addition 用足し (ようたし) running errands 継ぎ足し (つぎたし) addition And 9 more. Word lists Spoken Jinuma: Japanese Dictionary · Word lists