length·en 
(lĕngkthən, lĕng-, lĕn-)
(lĕngkthən, lĕng-, lĕn-)tr. & intr.v. length·ened, length·en·ing, length·ens
To make or become longer.
lengthen·er n.
- prayer rug
- prayer shawl
- prayer wheel
- praying mantis
- praziquantel
- prazosin
- PRC
- pre-
- preach
- preacher
- preachification
- preachify
- preachily
- preachiness
- preachingly
- preachment
- preach to the choir
- preach to the choir/converted
- preach to the converted
- preachy
- preadaptation
- preadolescence
- preadolescent
- preadult
- preagricultural