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
GuÁLter-Portuguese
Iliaeel-YAH (Russian)Georgian, Russian, Bulgarian, Old Church Slavic
JannahJAN-əEnglish (Rare)
ArgiÑE-Basque
Franciska-Hungarian
Clifford['klifəd]