sup

The verb is from Middle English soupen, from Old English sūpan (“to sip, drink, taste”), from Proto-Germanic *sūpaną (compare Dutch zuipen (“to drink, tipple, booze”), German saufen (“to drink, booze”), Swedish supa (“to drink, swallow”)), from Proto-Indo-European *sub-, compare Sanskrit सूप (sū́pa, “soup, broth”), from *sewe (“to take liquid”). More at suck.

The noun is from the verb. There is no evidence of continuity with Old English supa. Compare Middle English soupe, from Old English sūpe, which has the same meaning as Middle English sope (“a mouthful or small amount of drink”), from Old English sopa, whence sop.

Procopic form of what's up (“how are you doing?”)

First syllable of superintendent.

First syllable of superior.

Clipping of supplement.

First syllable of supervision.