1. One who patronizes a person on a sickenly manner, usually ostenting to "sum points" with that person or enhance their friendship easily.
2. The act of appling suction with the lips in order to insert an object and/or food into one's mouth.
3. Slang for blowjob
on a context which characterizes a person for their patronizing and utter annoying favoritism for someone.
1. "Wow my hair isn't that great, stop being such a suckup!"
2. "Wow what a mess, you're going to have to suckup it all!"
3. "Looks at him, complimenting all euphorically like a puppet, suckup bastard."