Fasten up Meaning in English
expression · lemma: fasten
Definition
To close or secure something tightly, such as buttons, zippers, seatbelts, or straps. Often used with clothing or objects that need to be closed securely.
Usage & Nuances
"Fasten up" is slightly informal and often used in instructions, especially for clothing or safety gear, as in 'fasten up your coat' or 'fasten up your seatbelt'. It can often be replaced by just 'fasten' or 'do up' in some contexts. Not commonly used in very formal writing. Avoid with inanimate objects unrelated to closure, like doors (use 'close' or 'shut').
Example Sentences
Please fasten up your seatbelt before the car moves.
basic
Can you help me fasten up this dress at the back?
basic
Don't forget to fasten up your jacket before you go outside.
basic
"Kids, fasten up! We're about to leave."
natural
She had trouble fastening up her boots with gloves on.
natural
It's starting to snow, so you should fasten up your coat tight.
natural