From English - German Ding/FreeDict dictionary ver. 1.9-fd1:
klutzs /klˈʌtsz/
Trampel <pl>, Trampeltiere <pl>, Lackel <pl>, Galöri <pl>, Elefanten im Porzellanladen
Synonyms: lumps, clumsy oafs, clumsy clots, galoots, stumblebums, lummoxes, lubbers
see: lump, clumsy oaf, clumsy clot, galoot, stumblebum, klutz, lummox, lubber