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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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