こうそく 高速 Common word JLPT N3 LinksSentence search for 高速Sentence search for こうそくKanji details for 高 and 速Edit in JMdict Na-adjective (keiyodoshi), Noun which may take the genitive case particle 'no', Noun1. high-speed; rapid; expressちょう超こうそく高速がコンコルドき機のとくちょう特徴だ。Great speed is a feature of the Concorde.Noun2. highway; freeway; expressway; motorwayAbbreviation, See also 高速道路 Discussions Log in to talk about this word.