snake in grass

Concealed treacherous person

A snake in the grass is a treacherous person who conceals hostile intentions behind a friendly manner.

The phrase evokes the danger of an unseen serpent lurking where you'd walk barefoot: I trusted him completely, but he turned out to be a snake in the grass.

The image dates to ancient Latin poetry but remains vivid in modern use.

Related

wolf in sheep's clothing · hidden · trust no one · lurking · venom · coiled · slither · cunning · danger · unseen · meadow · treacherous · viper · predator · ambush · serpent · bite · cold blooded

Categories
Opposites
trustworthiness

snake in grasstrue friend

Genuinely loyal companion

loyal friend · faithful companion · straight shooter · true blue · ride or die

openness of hostility

snake in grasssworn enemy

Vowed lifelong adversary

character type

snake in grassstraight shooter

Forthright, blunt person

honest John · straight arrow · salt of the earth · heart on sleeve · open book

Family

snake, grass, snakes, snaked, snaking, snaky, snakelike, grasses, grassy

Familiarity
Top 200,000
Profile
Known to kids · Used worldwide · Timeless · Negative · Everyday, not technical · Rated G