fasten

[fas-uhn, fah-suhn] / ˈfæs ən, ˈfɑ sən /

VERB

make secure; join together

Synonyms

STRONGEST

adhere affix attach bolt glue nail screw solder tighten truss weld

STRONG

anchor band bar batten belt bind bond brace button catch cement chain cleave close cohere connect couple embed establish fix girth grip hitch hold hook implant infix jam knot lace leash link lock lodge moor mortise rivet rope seal set settle stick strengthen string tag tie unite wedge

WEAK

freeze to hitch on hook up make firm stay put tack on

Antonyms

STRONGEST

detach disconnect disjoin let go loose loosen release separate unfasten

STRONG

allow confuse destroy discourage displace dissuade divide forget free halt leave lose open permit refuse remove unfix unhitch unlace unlock unseal unsettle unstick untie

WEAK

unchain unlink

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

At designer Rowen Rose, a large orange stone was used to fasten a green or yellow scarf to a matching sweater.

From Barron's • Jan. 20, 2026

Reusable pads look similar to disposable ones but are usually made from cotton or bamboo and fasten around your underwear with poppers.

From BBC • Sep. 23, 2025

Mechanics had to use brute force to fasten them together, he said.

From Seattle Times • Apr. 9, 2024

She urged drivers to “understand your emotional state” before getting behind the wheel and to remember to fasten their seat belts.

From Los Angeles Times • Mar. 21, 2024

The Marine in the mirror unfastened his collar and would not fasten it again until it was absolutely necessary.

From "The Great Santini" by Pat Conroy

Vocabulary lists containing fasten

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