Wordnet 3.0
NOUN (1)
1.
someone who prevents you from enjoying something that they themselves have no need for;
WordNet (r) 3.0 (2006):
dog in the manger
n 1: someone who prevents you from enjoying something that they
themselves have no need for
Moby Thesaurus II by Grady Ward, 1.0:
24 Moby Thesaurus words for "dog in the manger":
careerist, egotist, fortune hunter, grouch, hog, individualist,
killjoy, lone wolf, loner, malcontent, monopolist, narcissist,
road hog, self-advancer, self-pleaser, self-seeker, self-server,
sourpuss, spoilsport, temporizer, timepleaser, timeserver,
tufthunter, wet blanket