a·phis 
(āfĭs, ăfĭs)
(āfĭs, ăfĭs)n. pl. a·phi·des (āfĭ-dēz′, ăfĭ-)
An aphid, especially one of the genus Aphis.
[New Latin Aphis, genus name.]
- counterfeit
- counterfeiter
- counterfoil
- counterforce
- counterglow
- counterinsurgency
- counterinsurgent
- counterintelligence
- counterintuition
- counterintuitive
- counterintuitively
- counterirritant
- counterirritation
- counterman
- countermand
- countermarch
- countermeasure
- countermine
- countermove
- countermovement
- counteroffensive
- counteroffer
- counterpane
- counterpart
- counterparty