忘わすれがたいわすれがたいConjugationMeanings1i-adjectiveunforgettable; memorableDescribes an experience, person, or thing that is hard to forget, often with emotional weight.あの旅たびは忘わすれがたい思おもい出でになった。That trip became an unforgettable memory.彼かの女じょの笑え顔がおは忘わすれがたい