worth mentioning; worth saying
Used to express that something is worth the effort of saying, often in the phrase 言い甲斐がある.
When I give him advice, he puts it into practice right away, so it is worth saying.
With this much response, it was worth saying.
Standard kanji spelling.
Variant spelling without okurigana.
Compound of 言い (the continuative form of 言う 'to say') and 甲斐 'worth, effect'. The exact historical derivation is uncertain, but the word follows the common pattern of attaching 甲斐 to a verb stem to express 'worth doing'.