noun which may take the genitive case particle 'no', na-adjective, noun
just like; no different from; as good as
Used in the pattern Nも同然 or Vたも同然 to say something is virtually the same as something else, often with a negative or resigned nuance. Common in set phrases like 死んだも同然 (as good as dead).
この試合は勝ったも同然だ。
This match is as good as won.
彼はもう死んだも同然
He is as good as dead.
あの二人は夫婦も同然の関係だ。
Those two are practically like a married couple.