throw in at the deep end
To introduce (someone) to a new situation without adequate preparation.
Meaning adapted from Wiktionary, available under CC BY-SA 4.0.
“My boss threw me in at the deep end on my first day.”
“You throw your children in at the deep end when they travel alone.”
“The manager threw the new intern in at the deep end by asking her to lead the meeting alone.”
“The teacher threw me in at the deep end by asking me to translate for the visitors when the official guide failed to show up.”
“Without any prior training, the company threw the new recruit in at the deep end, forcing him to manage the entire project while the team was away.”
From an allusion to the architecture of the swimming pool, divided between a shallow end and a deep end. In the former, a person may stand on the bottom with their head safely above the surface; in the latter, the depth exceeds the height of the individual.
The idiom describes the transition from safety to the necessity of immediate action. One must be able to swim, or at least tread water, to avoid drowning. It is a matter of basic buoyancy.
- 01
all ends up
Completely; totally.
- 02
arse end of nowhere
A very remote place.
- 03
big end of town
The top end of town.
- 04
bitter end
The end of a long and difficult process.
- 05
burn the candle at both ends
To work hard night and day; to sleep late and wake up early; to overwork or overexert oneself.
- 06
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.
- 07
come to a sticky end
To die unpleasantly due to one's actions.
- 08
come to an end
To stop; to cease; to no longer continue.
Last updated August 10, 2026