un·der·dog 
(ŭndər-dôg′, -dŏg′)
(ŭndər-dôg′, -dŏg′)n.
1. One that is expected to lose a contest or struggle, as in sports or politics.
2. One that is at a disadvantage.
- intermittent current
- intermittently
- intermitter
- intermix
- intermodal
- intermodulation
- intermontane
- intermountain
- in terms of
- intern
- internal
- internal-combustion engine
- internal ear
- internal energy
- internality
- internalization
- internalize
- internalizer
- internally
- internal medicine
- internal phase
- internal respiration
- internal rhyme
- internal secretion
- international