者

sheep breeder; sheepman; shepherd

permitter; licensor

permit holder; person permitted (to do something); authorised person

exporter

supporter; breadwinner

decomposer

Adjectival nouns or quasi-adjectives (keiyodoshi)

skilled but shoddy; skilled but without style; skilled but lacking in refinement

skilled but shoddy performer; person who is skilled but lacks taste

person who lives on the water

imbecile; moron

perjurer; false witness

smooth-spoken

people of similar tastes

regular (permanent) conductor

psychoanalyst

senior; old timer

donor; contributor; donator

employed person

recipient; receiver

reviewer; person who checks accuracy of written work

prosperous person; powerful person

drowned person

pacifist

blood donor

ex-geisha; former geisha

nuclear physicist