# sickest

/ˈsɪkəst/ (US) · /sˈɪkəst/ (UK) · CEFR A2 · Adjective

Source: https://englishreference.com/word/sickest
Updated: 2026-10-16

## Definition

most sick or unwell compared with others in a group. You use it to say who feels worst.

For teachers: most ill or unwell in comparison with others; ranking highest for sickness, nausea, or disgust. Often appears with 'the' and follows the patterns of 'sick', including 'sick of' for strong dislike.

## Examples

- She is the sickest child in the class today.
- Of the three brothers with flu, the youngest is the sickest and stays in bed all day.
- After the rough crossing, she felt the sickest among the passengers, unable to stand without holding the rail.

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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.