宣戦 せんせん Meanings Noun, する verb, Intransitive declaration of war Kanji 宣 proclaim. Read as セン. 戦 war. Read as セン. Example sentences その国は隣国に対し宣戦を布告した。The country declared war against its neighbor. Words containing 宣戦 宣戦布告 (せんせんふこく) declaration of war Jinuma: Japanese Dictionary · Word lists