1 B2 idiomatic informal
To gradually understand or become aware of something, especially after a delay.
"It took me a few minutes, but I finally cottoned on that he was joking."
cotton on
B2 informal intransitive
To gradually realise or understand something.
In plain English
To slowly figure out what is going on.
What does "cotton on" mean?
One main meaning — here's how to use it.
Literal vs figurative
Words literally mean
Cotton is a soft fibre; 'on' suggests attachment — as if an idea is slowly sticking to your mind like fibres clinging together.
Actually means
To slowly figure out what is going on.
Usage tip
Chiefly British and Australian English. Often implies the realisation took longer than expected. Usually appears in past tense ('cottoned on') or with 'eventually', 'finally', 'quickly', etc.
Words that pair with "cotton on"
Natural word combinations native speakers use most often.
eventually finally quickly slowly immediately never
How to conjugate "cotton on"
The five tense forms you'll use most often.
Base
cotton on
I/you/we/they
3rd person
cottons on
he/she/it
Past simple
cottoned on
yesterday
Past participle
cottoned on
have + pp
-ing form
cottoning on
continuous
Hear "cotton on" in the wild
Listen to native speakers using "cotton on" in real YouTube videos — click a clip to watch it on Looplines.
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