frizz up
B2 informal inseparable both
In simple words
When your hair goes curly, puffy, and hard to control — usually because of humidity or moisture.
Literal meaning: To frizz upward or all over — mostly transparent.
Meanings
1 B2 informal
For hair to become frizzy, curly, or unruly, often due to humidity or moisture.
"My hair always frizzes up the moment I step outside in rainy weather."
Grammar: inseparable
2 B2 informal
To deliberately make hair look frizzy or curly using heat or styling tools.
"She frizzed up her hair to get a bigger, retro look for the party."
Grammar: separable
Usage notes
Mostly used in informal conversations about hair care. Often used reflexively or as an intransitive verb. Common in everyday speech, especially among people discussing hair and beauty. Used in both British and American English.
Commonly used with
hair humidity rain curls weather straight hair
Forms
Base
frizz up
I/you/we/they
3rd person
frizzes up
he/she/it
Past simple
frizzed up
yesterday
Past participle
frizzed up
have + pp
-ing form
frizzing up
continuous
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Synonyms
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