一瞬いっしゅん Common Noun Adverb English jmdict 1 noun (common) (futsuumeishi) adverb (fukushi) instant;moment;for an instant それは私にとってはらはらする一瞬だった。 It was a nervous moment for me.
一瞬絶句いっしゅんぜっく Noun Irregular English jmdict 1 noun (common) (futsuumeishi) noun or participle which takes the aux. verb suru breaking off short (in one's speech);rendered speechless for a moment