know which end is up

English

Etymology

From the common marking this end up on parcels to guide proper transport.

Pronunciation

Audio (General Australian): (file)

Verb

know which end is up (third-person singular simple present knows which end is up, present participle knowing which end is up, simple past knew which end is up, past participle known which end is up)

(idiomatic) To possess sound judgment or common sense; to have a clear understanding of a situation.
Synonym: know which way is up

He was too stoned to know which end was up.
- 1992, Dorothy Garlock, Glorious Dawn‎^[1], →ISBN:
  He's so in love, he doesn't know which end is up.
- 2005, John C. Hefley, Failure Equals Death, →ISBN, page 29:
  “I'll gladly take criticism from a cop who knows which end is up and isn't afraid to do the job the way it should be done.”
- 2009, Lis Wiehl, April Henry, Face of Betrayal, →ISBN, page 145:
  “I'm not some naïve, virginal little nothing who doesn't know which end is up.”
- 2010, Gordon Lish, “The Friend”, in Collected Fictions, →ISBN, page 243:
  “[B]elieve me, she is some catch for the right boy—for a boy which knows which end is up.”
- 2011, Richard North Patterson, Silent Witness, →ISBN, page 277:
  “When someone doesn't know which end is up, who knows why they do things.”
- 2011, Catherine McGuinness, Emperors' Clothes‎^[2], →ISBN, →ISBN:
  The whole company is in disarray! Nobody knows which end is up.

Usage notes

Frequently used in negative constructions to discuss inexperience or failing to understand a situation. Cf. know one's ass from a hole in the ground.

Translations

understanding in a specific situation

Danish: vide hvilken vej der vender op
Finnish: olla kärryillä, (not know which end is up) olla pihalla

The translations below need to be checked and inserted above into the appropriate translation tables. See instructions at Wiktionary:Entry layout § Translations.

Translations to be checked‌: "not know which end is up"

Chinese:
Mandarin: ^{(please verify)} 無知／无知 (zh) (wúzhī), ^{(please verify)} 沒有常識／没有常识 (méiyǒu chángshì)
Dutch: ^{(please verify)} ze niet allemaal op een rij hebben
French: ^{(please verify)} être à la masse (fr)
German: ^{(please verify)} nicht wissen wo vorn und hinten ist
Portuguese: ^{(please verify)} não ter noção das coisas
Russian: ^{(please verify)} не знать, что к чему́ (ne znatʹ, što k čemú)
Zazaki: ^{(please verify)} ser u peyê cı nêzanıyeno