-sexed is used after adverbs such as 'over' and 'under' to form adjectives which indicate that someone wants to have sex very often, or not as often as most other people.
My husband has always been a bit over-sexed.
sexed in British English
(sɛkst)
adjective
1. (in combination)
having a specified degree of sexuality
undersexed
2.
of, relating to, or having sexual differentiation
sexed in American English
(sɛkst)
adjective
1.
of or having sex or sexual differentiation
2.
having (a specified degree of) sexuality
sexed in American English
(sekst)
adjective
1.
being of a particular sex or having sexual characteristics
2.
characterized by sexuality; having sex appeal
Word origin
[1590–1600; sex + -ed3]This word is first recorded in the period 1590–1600. Other words that entered Englishat around the same time include: Byzantine, dummy, fixture, jolt, tube-ed is a suffix forming adjectives from nouns. Other words that use the affix -ed include: bearded, monied, tender-hearted