taking to bad habits

lose temper

to ruin, spoil, mar, vitiate

insult, disgrace, dishonour

become a sinner, jeopardize chances of salvation, mar or jeopardize (one's) future state of bliss

beat soundly, thrash

make a wry face, frown, sulk, pout, grimace

spoil one's tongue, use foul language, use wrong words or idioms

disfigure, mar, deface

defame, make poor

disfigure, deface

thrash, beat severely

lead a life of sin, spoil one's life

defame, bring disgrace

spoil or mar the work, foil, upset (someone's) apple cart, make a mess of

disfigure, deform

make a plan fail, ruin one's credit, bring disgrace upon

ruin the family, cause discord in the family

corrupt someone's name, defame

disfigure

nature, temperament, disposition, constitution, complexion, temper, mood, habit, humour, pride, vanity

amorous, having the disposition of a lover, amorous, ladies' man, Don Juan, squire of dames

knowing (or one who knows) the temperament or constitution

bad-tempered