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

to become unidiomatic, (of someone) be using foul language

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

disfigure, mar, deface

taking to bad habits

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

tongue, language, dialect, speech

bad, obscene or rude language, tendency to use abusive language

be fickle, not to stick to one's words