Synonyms of viscous

viscous

adjective

ˈvi-skəs 

as in thick

being of a consistency that resists flow

viscous syrup that takes forever to pour from a narrow-neck bottle

Synonyms & Similar Words

• thick
• sticky
• syrupy
• heavy
• viscid
• ropy
• creamy
• turbid
• thickened
• condensed
• gelatinous
• undiluted
• glutinous
• thickish
• gooey
• gummy
• concentrated
• slushy
• gluey
• semifluid
• semiliquid
• jellylike

Antonyms & Near Antonyms

• thin
• runny
• watery
• fluid
• liquid
• soupy
• flowing
• weak
• dilute
• diluted
• watered-down

Example Sentences

Recent Examples of viscous

If a black hole had a secret identity as an imperfect, energy-dissipating, viscous fluid, then an effective field theory for imperfect, energy-dissipating, viscous fluids should exist, too. — Charlie Wood, Quanta Magazine, 17 Aug. 2026

The viscous gel works by coating the walls of your pipes with a solution that eliminates the residue the flies are attracted to. — Emma Jacobson, Bon Appetit Magazine, 13 Aug. 2026

Several celebrities and their PR teams have denounced Perez for his viscous public insults, from Khloe Kardashian, Miley Cyrus, and Lady Gaga, a former friend of Perez. — Charisma Madarang, Rolling Stone, 5 Aug. 2026

And more than half of Venezuela’s barrels are destined for the United States, where refineries in the Gulf are capable of processing its heavy, viscous form of crude, said Jungman. — Anna Cooban, CNN Money, 2 Aug. 2026