It means you are unforgiving or holding onto grudges. Maybe someone hurt you and you won't let it go.
That could mean to contradict the other person or undermine what they are saying.
Saying someone has a sharp tongue typically means they are quick-witted and use their words to criticize or hurt others. It suggests that they have a tendency to make clever or cutting remarks that can be biting or sarcastic.
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'To take the bitter with the sweet' is a reminder that life is full of inequities, usually used when someone has had something bad happen, 'the bitter'; and the 'sweet', hopefully, will come soon.
When someone tells you to be mature it means to( "act your age").
Fight them
A snitch is someone who tells or tattles on someone else's wrongdoings. It's an insult.
It means that that you are seriously ill.
It means that you are less than what they are looking for.
When someone tells you that you bring out the good side in them, they mean that you appreciate them.
it means to if you do something wrong and someone tells someone in authority what you did
When someone tells you that you don't have a Christianhristian conscience he means you do not have the heart to practice some of the values that Christianity teaches.