IPA: /ˈfæsn/
KK: /ˈfæsn/
To become attached or joined to something; to hold something firmly in place.
The child fastened the buckle on her shoes before going outside.
Past: fastened
Past Participle: fastened
To attach something securely to another object or to close something tightly so that it stays in place.
Please fasten your seatbelt before the flight takes off.
Past: fastened
Past Participle: fastened
Fasten → It originates from Old English 'fæstan' (meaning to make firm or secure). The word 'fasten' means to make something secure or to attach it firmly.
Think of making something 'firm' or 'secure' — that's what fasten means.