shows one's true colors

Drops the mask

Shows one's true colors means to reveal one's real character, especially after concealing it.

The phrase implies that someone's authentic nature—often unflattering—finally becomes visible: He seemed charming at first, but he showed his true colors when things got difficult.

The expression comes from naval warfare, where ships would fly false flags before revealing their actual allegiance in battle.

Related

facade · betrayal · stab in the back · vulnerability · hypocrisy · manipulation · deceit · transparency · concealment · unmasking · drop the mask · genuineness · authenticity · courage · loyalty · fair weather friend · sincerity · bare one's soul

Opposites
authenticity vs. deception

shows one's true colorsplays a role

feigns · pretends · dissembles · deceives · two-faced

transparency vs. opacity

shows one's true colorskeeps mum

keeps one's own counsel

exposure vs. concealment

shows one's true colorswolves in sheep's clothing

Deceivers feigning harmlessness

plays one's cards right · puts on a brave face

Family

shows, showed, shown, showing, showily, showiness, oneness, truths, truthfulness

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