想当然 (xiǎng dāng rán) — to take for granted; to assume uncritically

Definition

想当然 (xiǎng dāng rán) means to assume something is true without checking — a presumptuous, uncritical stance. It carries a negative judgment, unlike neutral 'assume' (假设/以为). Often used in the pattern 不能/不要 + 想当然 to warn against it.

verb
to take for grantedto assume uncritically

Examples

  • 想当然。
    Nǐ bù néng xiǎng dāng rán dì rèn wéi tā men dōu huì tóng yì.
    You can't take for granted that they will all agree.
  • 想当然,。
    Hěn duō wèn tí bù néng xiǎng dāng rán, xū yào rèn zhēn sī kǎo.
    Many problems can't be taken for granted; they require careful thought.
  • 想当然。
    Zhè zhǒng xiǎng dāng rán de tài dù hěn róng yì chū cuò.
    This kind of presumptuous attitude easily leads to mistakes.

Origin

Compound word
构词法gòucífǎ
动宾dòngbīnVerb + object

An action followed by what it acts on, fused into one word.

当然as so
当dāngregard as然ránso
动宾Verb + object

想 means to think, and 当 + 然 give the sense of taking it as so.

Characters in this word

Most characters — around four in five — are built this way: one part hints at the meaning, the other at the pronunciation.

Meaning part形符xíngfú
心心xīnheart, mind
Sound part声符shēngfú
相
相xiāng想xiǎng
Same sound today

想 has 心 (heart, mind) below 相 (to look at); the shape shows the mind looking at or considering something, and 相 also gives the sound.

Open 想 →

Most characters — around four in five — are built this way: one part hints at the meaning, the other at the pronunciation.

This origin belongs to the traditional form 當; 当 is its simplified writing.

Meaning part形符xíngfú
田田tiánfield
Sound part声符shēngfú
尚
尚shàng當dāng
Close in sound todayThe sound part was a clue two thousand years ago — it often still helps, but not always.

The traditional form 當 combines 田 (field) with 尚; the evidence describes fields facing each other.

Open 当 →

Most characters — around four in five — are built this way: one part hints at the meaning, the other at the pronunciation.

Meaning part形符xíngfú
火火huǒfire
Sound part声符shēngfú
肰
肰rán然rán
Same sound today

然 is made from 肰, which gives the sound, and 火, which shows fire, matching the old sense 'to burn'.

Open 然 →

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