English to English verb
1 |
make longer |  | Example: Lengthen this skirt, please
source: wordnet30
2 |
become long or longer |  | Example: In Spring, the days lengthen
source: wordnet30
3 |
To extent in length; to make longer in extent or duration; as, to lengthen a line or a road; to lengthen life; -- sometimes followed by out. |  | source: webster1913
4 |
To become longer. |  | source: webster1913
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