せ Meanings Adverb so; really; seeming See also: そう. Words containing せ 二重らせん (にじゅうらせん) double helix (structure of DNA) 付け合わせる (つけあわせる) to garnish 組み合わせ論 (くみあわせろん) combinatorics And 20 more. Word lists Kansai dialect Jinuma: Japanese Dictionary · Word lists