Answer: gluiest

AnswerCrossword Clue
gluiestsolution of glue used for sticking things together
gluiestGLUEY, resembling glue
gluiesthard protein chiefly gelatinous substance that absorbs water to form a viscous solution with strong adhesive properties and that is obtained by cooking down collagenous materials (as hides or bones)
gluiestany of various strong adhesive substances