Con·tra 
(kŏntrə, kōn-)
(kŏntrə, kōn-)n.
A member of the rebel forces that opposed the leftist government of Nicaragua in the 1980s with the funds and support of the United States government.
[Spanish, short for contrarrevolucionario, counterrevolutionary, from contrarrevolución, counterrevolution : contra-, contra- (from Latin contrā-; see CONTRA-) + revolución, revolution (from Late Latin revolūtiō, revolūtiōn-; see REVOLUTION).]
- oscillating circuit
- oscillating universe
- oscillation
- oscillational
- oscillator
- oscillatory
- oscillogram
- oscillograph
- oscillographic
- oscillographically
- oscillography
- oscillon
- oscilloscope
- oscilloscopic
- oscine
- oscitance
- oscitancy
- oscitant
- Osco-Umbrian
- oscula
- oscular
- osculate
- osculation
- osculatory
- osculum