sucking up

Verb

suck up (third-person singular simple present sucks up, present participle sucking up, simple past and past participle sucked up)

1. (transitive) To absorb (fluid).
   • The dry soil sucked up water like a sponge.

   Synonyms:

   apple-polish, bootlick, bow and scrape, brownnose, butter up, dickride, duchess, fawn, fawn over, fellate

2. (often, slang, with-to) To adulate or flatter (someone) excessively, generally to obtain some personal benefit or favour.
   • Jimmy sucked up to the English teacher hoping he would get an A.

   Synonyms:

   brownnose, butter up, kiss up

3. (slang) To fellate (someone).