DictionaryfastenAttaching securely
verb

fasten

FASS-uhn/ˈfæsn/

To attach or hold something firmly in place.

She fastens the buckle on her backpack.

Close view of a Black adult woman securely fastening a small backpack buckle, two hands visibly joining the matching clasp halves.
Etymology

Fæstnian meant “to make firm or secure,” preserving the older meaning of fast still heard in “hold fast.” To fasten something is to put it into that firmly fixed state.

In context

Enhanced Public Domain87:39
the Scarecrow and the Woodman now began to fasten the mice to the truck using the strings they had brought one end of a string was tied around the neck of each Mouse
1900s Fiction: L. Frank Baum - The Wonderful Wizard of Oz (Audiobook)

More examples

  • Please fasten your seat belt.
  • She fastened the brooch to her jacket.
  • The lid fastens with two metal clips.

Forms

fasten · fastens · fastened · fastening

fastener noun — a device that holds things together

Similar words

attach
More generally means joining something to something else.
secure
Emphasizes preventing movement or release.