know which end is up
To possess sound judgment or common sense; to have a clear understanding of a situation.
Meaning adapted from Wiktionary, available under CC BY-SA 4.0.
“He is so confused that he does not know which end is up.”
“She is a smart leader who always knows which end is up.”
“Do you know which end is up in this confusing situation?”
“After working three double shifts in a row, I barely know which end is up.”
“You need to hire a lawyer who actually knows which end is up before you sign that complicated business contract.”
“The instructions for this cabinet are so poorly written that I no longer know which end is up.”
“The first day at a new job is always overwhelming, but your colleagues will help you until you know which end is up.”
“The new manager arrived with such radical ideas that the staff struggled to know which end was up during the transition.”
The idiom derives from the standard instructional marking placed upon parcels, which informs couriers and handlers of the orientation required for proper transport. The phrase *this end up* serves as the literal source for the figurative expression of general competence or situational awareness.
- 01
all ends up
Completely; totally.
- 02
arse end of nowhere
A very remote place.
- 03
as far as one knows
To the best of one's knowledge, as far as someone knows or possible information to be gathered about the topic, subject, aspect, or situation.
- 04
as you know
as it is already known.
- 05
big end of town
The top end of town.
- 06
bitter end
The end of a long and difficult process.
- 07
burn the candle at both ends
To work hard night and day; to sleep late and wake up early; to overwork or overexert oneself.
- 08
business end
The part of an object (chiefly a tool or weapon) that is physically used for its operation, rather than some other part such as the part by which it is held.
Last updated August 10, 2026