Wordnet 3.0
NOUN (1)
1.
a person who makes a promise;
[syn: promiser, promisor]
The Collaborative International Dictionary of English v.0.48:
Promiser \Prom"is*er\, n.
One who promises.
[1913 Webster]
WordNet (r) 3.0 (2006):
promiser
n 1: a person who makes a promise [syn: promiser, promisor]