gumming

(noun) ineffectual chewing (as if without teeth). Synonyms: mumbling.

(verb) cover, fill, fix or smear with or as if with gum. Synonyms: gum. Example: "If you gum the tape it is stronger."

(verb) grind with the gums; chew without teeth and with great difficulty. Synonyms: mumble, gum. Example: "The old man had no teeth left and mumbled his food."

(verb) become sticky. Synonyms: gum.

(verb) exude or form gum. Synonyms: gum. Example: "These trees gum in the spring."