An example of a lecher is someone who constantly needs to have sex.
Origin of lecher
- Middle English from Old French lecheor from lechier to lick, to live in debauchery of Germanic origin leigh- in Indo-European roots
From American Heritage Dictionary of the English Language, 5th Edition
- From Middle English lechour, from Old French lecheor (“glutton, sensualist, libertine") , from lecher (“to lick, live in gluttony or sensuality").