The phrasal verb 'cotton on' is primarily used in informal contexts and is prevalent in British English. It signifies the process of beginning to understand or realize something, often suddenly or after some initial confusion or delay. Usage of 'cotton on' is common in everyday conversation, especially when someone comprehends an idea or an underlying motive. For example, one might say, 'I cottoned on that she was concealing the truth,' indicating a newfound awareness. While it's not typically found in formal writing or speech, it is quite popular in spoken English, casual writing, and media to convey the moment of understanding or catching on to a situation, trend, or fact that wasn't immediately obvious. Its origins trace back to the mid-19th century, and its use has fluctuated but remains relatively steady as a recognizable idiomatic expression.
B1
PreIntermediate
1. To start to understand or become aware of something.
After hearing the story twice, she finally cottoned on to what he meant.
It took him a while, but he eventually cottoned on that the job was a scam.
2. To become aware of the reality or truth of a situation.
The kids cottoned on to the fact that their parents were planning a surprise holiday for them.
As the discussion continued, she cottoned on to the real reasons behind the changes.
