fasten down
B1 neutral separable transitive
In simple words
To attach something tightly so it stays in place.
Literal meaning: To fasten (attach) something in a downward direction — keeping it anchored.
Meanings
1 B1 neutral
To fix something firmly so it does not move, blow away, or become loose.
"The crew fastened down the cargo before the ship entered the storm."
Grammar: separable
2 B1 neutral
To close or secure something (such as a lid or cover) tightly.
"Make sure you fasten down the hatches before it rains."
Grammar: separable
Usage notes
Practical, everyday usage. Common in contexts involving weather, transport, or construction. Interchangeable with 'secure' or 'tie down' in most contexts.
Commonly used with
tarpaulin lid cargo cover straps bolts
Forms
Base
fasten down
I/you/we/they
3rd person
fastens down
he/she/it
Past simple
fastened down
yesterday
Past participle
fastened down
have + pp
-ing form
fastening down
continuous
Understand "fasten down" better
Try:
Real video examples
Video examples are being collected. Check back soon.
Synonyms
Want to master this phrasal verb?
Practice "fasten down" on Looplines