みたいだ

みたいだ is used to indicate resemblance ("like ~", "similar to ~") or to express a conjecture based on observation ("it seems like ~", "it looks like ~"). It is more colloquial and conversational than its more formal counterpart ようだ.

Resemblance – "like ~"

When attached to a noun, みたいだ expresses that something resembles or is similar to that noun.

This usage compares one thing to another, saying it has qualities similar to the noun.

Conjecture – "it seems like ~"

When attached to a verb or adjective in plain form, みたいだ expresses a guess or inference based on what the speaker has observed, heard, or felt.

This is similar to らしい and ようだ, but みたいだ is the most casual of the three.

Modifying nouns and verbs – みたいな / みたいに

みたいだ functions like a な-adjective, so it becomes みたいな before a noun and みたいに before a verb or adjective.

Attachment rules

• Nouns: Attach directly – こども子供

  • みたいだ → 子供みたいだ (No だ or な between the noun and みたいだ)

• な-adjectives: Stem only – しずか静か

  • みたいだ → 静かみたいだ (Drop だ before みたいだ)

• い-adjectives: Plain form – おいしい
  • みたいだ → おいしいみたいだ
• Verbs (plain form):たべた食べた
  • みたいだ → 食べたみたいだ

Polite form

In polite speech, みたいだ becomes みたいです.

Common mistake

Be careful not to confuse the resemblance use (Noun + みたいだ = "is like ~") with the conjecture use (Sentence + みたいだ = "it seems like ~"). Context usually makes the meaning clear.