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to fasten your seat belt

to fasten your seat belt

18 1.7
Buckle the belt across your body to stay safe in a car or plane
  • phrasal verb
translation icon : abrocharse el cinturón
  • As your captain, I advise you all to fasten your seat belts.
  • Fasten your seat belt, please
  • forget to fasten your seat belt
  • told you to fasten your seat belt

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Examples

Synonyms

to buckle
vsto fasten your seat belt
88 1.6

To fasten a belt or strap with a clasp

is specifically about securing the travel safety strap for passenger safety
to buckle up
vsto fasten your seat belt
45 3.9

Fasten a seatbelt or get ready for a difficult, exciting time

focuses only on physically securing the strap for travel safety
to cinch
vsto fasten your seat belt
8 5.5

To fasten a strap tightly so it does not slip

applies to securing the travel safety strap rather than general tightening
to belt up
vsto fasten your seat belt
  • UK
1 2.6

To fasten your seatbelt when you are in a car or plane

includes both car and aircraft use and stresses travel safety

Surface Forms

fastened your seat belt past participle
fastening your seat belt present participle
fastens your seat belt third person singular

Morphology

fasten + your + seat + belt

The instruction meaning is directly and transparently compositional from 'fasten' (to secure) + 'your' (possessive) + 'seat' + 'belt' (a strap for a seat); a learner who knows these words can infer the action. This is a literal, physical action in a common verb + object pattern and has clear cross-linguistic parallels, so it should be immediately understandable to a B1 learner.

Etymology

Fasten your seat belt comes from a simple, literal action: you fasten the belt to the seat so it holds you in place during sudden stops. That's why it means 'secure the belt' for 'safety' before a trip.