Synonyms for Greasy:

adj.

all (adjective)
sebaceous, oily, oleaginous.
oily (adjective)
slippery, fatty, unctuous, smooth, soapy, buttery, saponaceous, lubricious, Pinguid, oily, adipose.
slippery, oily (adjective)
lubricious, fatty, oleaginous, unctuous, slimy.

n.

androgynous, arboreal, algal, aromatic, bushy, aquatic, bare, barren, creeping, biennial. foamy, furry, armor-plated, gilded, gift-wrapped, frothy, gilt, grass, gold-plated, Cobbled. chilled, chewy, caramelized, crispy, calorific, cool, crisp, cream. proper, Simpering, slimy, mannered, suave, all sweetness and light, obsequious. greasy (noun)
fatty, fat, unclean, soiled, dirty, oily, sebaceous, oleaginous.

Other synonyms:

obsequious, mannered, Simpering, suave. slimy. proper. fat
fat.
Other relevant words:
bare, algal, cream, soiled, gold-plated, furry, foamy, frothy, chilled, Cobbled, slimy, aquatic, barren, calorific, armor-plated, arboreal, oleaginous, biennial, cool, proper, chewy, sebaceous, grass, androgynous, aromatic, obsequious, gilded, creeping, caramelized, suave, Simpering, unclean, mannered, gilt, crisp, bushy, dirty, fat, crispy, gift-wrapped.

Usage examples for greasy

  1. To Greasy Detective Gubb said nothing. – Philo Gubb Correspondence-School Detective by Ellis Parker Butler
  2. They are so greasy I can't touch them! – The Chautauqua Girls At Home by Pansy, AKA Isabella M. Alden