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US/ˈleŋk.θən/
UK/ˈleŋk.θən/
to make something longer, or to become longer
In context
We need to lengthen the runway so bigger planes can land.
The days slowly begin to lengthen once spring arrives.
She asked the tailor to lengthen the trousers by two centimeters.
Words that go with lengthen
verb + noun
- lengthen a skirtCan you lengthen this skirt a little?
- lengthen the runwayThe airport plans to lengthen the runway.
- lengthen the school daySome schools want to lengthen the school day.
- lengthen the strideRunners often lengthen the stride on flat ground.
adverb + verb
- gradually lengthenShadows gradually lengthen in the evening.
verb + adverb
- lengthen slightlyCold air can lengthen the process slightly.
Common mistakes
Incorrect:
She wants to length the dress.Correct: She wants to lengthen the dress.