From The Collaborative International Dictionary of English v.0.48 [gcide]:
Succeeder \Suc*ceed"er\, n.
A successor. --Shak. --Tennyson.
[1913 Webster]
From WordNet (r) 3.0 (2006) [wn]:
succeeder
n 1: a person with a record of successes; "his son would never
be the achiever that his father was"; "only winners need
apply"; "if you want to be a success you have to dress like
a success" [syn: achiever, winner, success,
succeeder] [ant: failure, loser, nonstarter,
unsuccessful person]