godan verb (-su), transitive verb
add something to what was said; say additionally
Used when someone adds a remark, explanation, or detail to a previous statement.
彼は「ありがとう」と言い足した。
He added, 'Thank you.'
もう一言言い足したいことがあります。
There is one more thing I'd like to add.
Standard kanji spelling.
Kana-mixed spelling, less common but acceptable.
Abbreviated kanji spelling; rarely used.
Compound of 言い (continuative form of 言う 'to say') + 足す ('to add').