# in at the deep end

idiom

Source: https://englishreference.com/idiom/in-at-the-deep-end
Updated: 2026-08-10

## Meaning

Placed in a complex situation (especially work-related) without adequate preparation or experience.

## Examples

- My new boss threw me in at the deep end today.
- You are in at the deep end during your first week of teaching.
- She feels in at the deep end because nobody explained the rules.
- They gave me a huge project on my first day, throwing me in at the deep end.
- I had never used this software before, but the team put me in at the deep end by asking me to lead the presentation.
- When the lead singer got sick, the young guitarist was thrown in at the deep end to perform for thousands of fans.
- Despite his lack of formal training, the manager was thrown in at the deep end to lead the company through its most difficult financial crisis.

## Origin

The phrase is derived from the physical gradient of a swimming pool, which progresses from a shallow end intended for beginners to a deeper section reserved for experienced swimmers. It suggests the sudden immersion of an individual into the latter without the benefit of the former.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.