What does 警戒 mean?
警戒 is a Japanese noun meaning “warning, admonition, vigilance” in English. It is written as 警戒 in kanji, けいかい in hiragana, and keikai in romaji. This word is part of JLPT N1 vocabulary.
Example sentence
彼は我々を警戒しているようだ。
He seems to be wary of us.