Directly related to "lean" or "bend":
* Clinch: To hold tightly, to grip firmly (from Old French "clinchier" - to bend, to nail)
* Incline: To lean or slope (from Latin "inclinare" - to bend, to lean)
* Recline: To lean back, to rest in a reclining position (from Latin "reclinare" - to lean back)
* Decline: To slope downward, to refuse (from Latin "declinare" - to bend away, to refuse)
Less directly related, but still connected to the idea of bending:
* Clinical: Relating to a clinic, a place for medical treatment (from Greek "kline" - bed)
* Client: A customer, someone who uses a professional service (from Latin "cliens" - a dependent, someone who leans on another for support)
Note: The root "clin" can also be found in some less common words like "clinotaxis" (tendency of an organism to move in response to a stimulus), but those are less frequently used.