lengthen
//ˈlɛŋ.θən//
Verb
lengthenInfinitive
lengthenPresent tense
lengthenedPast tense
lengthenedPast participle
lengtheningPresent participle
lengthensThird-person singular
1
To make or become longer in distance, extent, or duration.
The days lengthen as summer approaches.
2
To extend the duration or time of something.
The company decided to lengthen the deadline by two weeks.