op·por·tun·is·tic 
(ŏp′ər-t-nĭstĭk, -ty-)
(ŏp′ər-t-nĭstĭk, -ty-)adj.
Taking immediate advantage, often unethically, of any circumstance of possible benefit.
- Early Modern English
- early music
- early-music
- early on
- early warning system
- earlywood
- earmark
- earmuff
- earn
- earned run
- earned run average
- earner
- earnest
- earnest
- earnestly
- earnest money
- earnestness
- Earnhardt
- earnings
- earn one's spurs
- earn (one's) spurs/stripes
- earn one's stripes
- earn spurs
- earn stripes
- Earp