
Suck up
Negative Connotation
Using 'suck up' can imply a person is being insincere or manipulative for personal gain.

Everyone knows she's sucking up to the teacher, even though she doesn't like him.
Informal Speech
'Suck up' is used in casual or informal conversations rather than formal settings.

I can't stand how he always sucks up to our coach.
Perceived Negatively
When someone is labeled a 'suck up', they're often viewed unfavorably by peers.

The other interns don't like him because he's a blatant suck up.
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