clamber UK /ˈklæmbə/US /ˈklæmbɚ/noun 1verb 1forms 5 noun1 •The act of clambering; a difficult or haphazard climb. verb1 •To climb (something) with some difficulty, or in a haphazard fashion.The children clambered over the jungle gym. formsclambered · clambering · clambereth · clambers · clamberest