Noun
A competitor thought unlikely to win.
Synonyms: little guy, rank outsider
Somebody at a disadvantage.
Synonym: bottom dog
A high swing wherein the person pushing the swing runs beneath the swing while the person being pushed is at the forward limit of the arc.
Source: en.wiktionary.orgThe lunatic fringe wags the underdog. H. L. Mencken
When I see something unjust, I have to intervene - it's hard for me to watch the underdog suffer. Kristen Bell
A man needs to look, not down, but up to standards set so much above his ordinary self as to make him feel that he is himself spiritually the underdog. Irving Babbitt
You know, it's quite all right to give the underdog a hand, but only one hand. Keep the other hand on your pistol - or he'll try to eat the one you gave him! H. Beam Piper
My favorite driver is always either the bad guy or the underdog. Bo Jackson
Don't talk to me about aesthetics or tradition. Talk to me about what sells and what's good right now. And what the American people like is to think the underdog still has a chance. George Steinbrenner