show in true colours



show somebody in their true colours

  (British & Australian) also show somebody in their true colors (American & Australian)
to show what someone's real character is, especially when it is unpleasant By showing the terrorists in their true colours, the government hopes to undermine public support for them.
See also: colour, show, true

Common Names:

NameGenderPronouncedUsage
Suzannasoo-ZAN-əEnglish
DmitryDMEE-treeRussian
Fillin-Irish
Sam (1)SAMEnglish
MelchiorMEL-khee-awr (Dutch), MEL-kyawr (English)Dutch, Judeo-Christian Legend
Morrigan-Irish Mythology