Japanese grammar

What does ~も同然だ mean? Japanese grammar N2

~も同然だ means is practically the same as…; may as well be….

Quick facts
Level (estimated, JLPT framework)N2
StructureN + (も)同然だ
Vた/Vていない + も同然だ
Romajimodouzenda
Meaningis practically the same as…; may as well be…

Forming it

Noun家族 → 家族も同然だ
Verb終わった → 終わったも同然だ

How to use it

In reality not quite exactly so, but practically equivalent. A subjective judgment made by the speaker.

  • 「Nも同然だ」 = practically the same as N: 「長い付き合いだから、彼は家族も同然だ」.
  • With a verb, use the た form or negative form: 「この試合はもう勝ったも同然だ」「毎日遅刻するなら、来ていないも同然だ」.
  • As a noun modifier it becomes 「同然の+N」: 「新品同然の車」 (a car that's practically new).

Examples

  • We have known each other so long that he is practically family.

  • Being late every day is as good as not coming at all.

Keep in mind

  • A subjective judgment, not a fact.
  • Modifying a noun uses 「同然の」.

Common mistakes

  • Wrong新品(しんぴん)も同然(どうぜん)車(くるま)を買(か)った。

    I bought a car that's practically new.

    Correct新品(しんぴん)同然(どうぜん)の車(くるま)を買(か)った。

    As a noun modifier, use 「同然の」.

  • Wrong彼(かれ)は毎日(まいにち)休(やす)むも同然(どうぜん)だ。

    It's practically as if he takes a day off every day.

    Correct彼(かれ)は毎日(まいにち)休(やす)んでいるも同然(どうぜん)だ。

    The verb must be conjugated as Vた or Vていない/Vている before 「も同然だ」, not the dictionary form.

Exam tips

  • 「も同然だ」 = practically the same as; as a modifier 「同然の+N」.

Related patterns

All N2 grammar →