goopy in English dictionary goopy Meanings and definitions of "goopy" Having the consistency of goop Vague; undefined or sentimental adjective Having the consistency of goop. adjective Vague; undefined or sentimental. more Grammar and declension of goopy goopy ( comparative goopier, superlative goopiest) goopy (comparative goopier, superlative goopiest) more Sample sentences with "goopy" Declension Stem Try again Available translations German Polish Authors