awkward in movement or action; without skill or grace: He is very clumsy and is always breaking things.
2.
awkwardly done or made; unwieldy; ill-contrived: He made a clumsy, embarrassed apology.
Origin: 1590–1600; clums benumbed with cold (now obs.) + -y1; akin to ME clumsen to be stiff with cold, dial. Sw klumsig benumbed, awkward, klums numbskull, ON klumsa lockjaw. See clam2