Thesaurus.com
Dictionary.com
Definitions

fecal

[fee-kuhl] / ˈfi kəl /
ADJECTIVE
filthy
Synonyms
STRONGEST
disheveled grimy grubby grungy muddy nasty soiled squalid
WEAK
begrimed cruddy feculent foul gross impure loathsome miry mucky putrid repulsive revolting scummy slimy slipshod sloppy slovenly smoky soily sooty unclean uncleanly unkempt unwashed verminous vile yecchy yucky
Antonyms
STRONGEST
clean pure
WEAK
sterile unpolluted
ADJECTIVE
rotten
Synonyms
STRONGEST
corrupt disgusting moldy noxious overripe putrid rancid rotting sour spoiled stale
WEAK
bad bad-smelling corroded crumbled crumbling decomposed decomposing disintegrated disintegrating feculent festering fetid foul gross infected loathsome loud mephitic moldering noisome offensive perished polluted purulent pustular putrescent putrified rank smelling stinking strong tainted touched unsound
Antonyms
STRONGEST
fresh good helpful perfumed pleasant pure sweet wholesome
WEAK
decent honest kind moral new nice superior trustworthy uncorrupt undecayed

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Scientists collected fecal samples to measure how much of the active ingredients remained and to estimate how much exposure dung-feeding insects could face.

From Science Daily • Feb. 22, 2026

"They left me there all night, with damp walls, toilets in a deplorable state with hundreds of cockroaches and fecal matter that has built up over months," Castro recounted.

From Barron's • Feb. 6, 2026

The main way people get norovirus is by accidentally drinking water or eating food contaminated with fecal matter, or touching a contaminated surface and then placing their fingers in their mouths.

From Los Angeles Times • Dec. 13, 2025

Contamination by bacteria from fecal matter has been found on several occasions in the wells supplying Perrier, especially after heavy rainfall.

From Barron's • Nov. 18, 2025

The Tug, Dad said, had the highest level of fecal bacteria of any river in North America.

From "The Glass Castle" by Jeannette Walls