You cannot change your innate self.
He was a bully at school and he’s a bully now – a leopard can’t change its spots.
Biblical.
Widespread but rather formal form of expression. Not widely used by the young.
A B C D E F G H I J K L M N O P Q R S T UV W XYZ
AdageAgreementAmericaAnimalsAphorismAustralian originBiblicalBlueBodyBrass tacksBuildingBusinessChildhoodChildrenClicheClockClothesCockney rhyming slangColourComedyConflictCountryCrimeDanceDateDeathDisgustDrinkEducationEffortEmotionEuphemismExcellenceExcessFailureFamilyFirst worldFoodFrenchFruitGreek originHabitHairHappinessHonestyHousehold itemsHyperboleLanguageLatinLegalLocationLuckMadnessMedicalMilitaryMisfortuneMoneyMusicNameNatureNauticalNonsenseNumberPatiencePlaceProverbProverbialReduplicationRelaxationReligionRiskScienceSecretsSexShakespeareSlangSportStupiditySuccessSurpriseTechnologyThe human bodyTheatreTimeToolTravelTrickeryVehicleWaterWeatherWork
Suggest a new idiom