What does 同然 mean?
同然 is a Japanese adjective meaning “just like; (virtually) no different from; (almost) the same as; as good as (e.g. dead, settled)” in English. It is written as 同然 in kanji, どうぜん in hiragana, and douzen in romaji. This word is part of JLPT N4 vocabulary.
Example sentence
あいつは盗人も同然だ。
He is no better than a thief.