goo-goo adjective 1exclamation 1noun 2forms 3 adjective1 •(slang) Amorous, affectionate.I have to admit he is really easy on the eyes, but I don’t go all goo-goo over him every time he’s near like most of the girls in class. — 2011 exclamation1 •The noise of a baby trying to imitate speech. noun2 •(US, disapproving) A government reformer.Stinging Rebuke Administered to Bald Attempt to Grab City; Goo-Goo Clique Swept Off Their Feet by Landslide Against Municipal Freak — 1912 •(vulgar, offensive) A Filipino person. formsgoo-goos · more goo-goo · most goo-goo