cake ‧ walk /ˈkeɪkwɔːk $ -wɒːk/ BrE AmE noun [singular]
[ Date: 1800-1900 ; Origin: cakewalk 'walking competition with a cake as first prize' (19-20 centuries) ]
American English informal a very easy thing to do, or a very easy victory SYN piece of cake :
The game was a cakewalk.