| opium poppy |
a Eurasian annual poppy having grayish-green leaves and bearing large white, red, pink, or purple flowers, and oily seeds, the unripe pods of which may be harvested for their opium-containing sap. |
| opossum |
any of a number of American marsupials that are active at night and live in trees. [2 definitions] |
| opossum shrimp |
a small shrimplike crustacean, the female of which carries her eggs in a pouch between the legs. |
| opp. |
abbreviation of "opposite." |
| opponent |
one who opposes; antagonist; foe. |
| opportune |
favorable or suitable, esp. in relation to time. |
| opportunism |
an act or the habitual practice of taking advantage of situations for one's own ends without considering principles or the effects on others. |
| opportunist |
one who tends to take advantage of situations to serve his or her own ends, especially without regard for others or of principles. |
| opportunistic |
seeking or taking advantage of situations to serve one's own ends, especially without regard for others or for principles. |
| opportunity |
a chance that makes something possible or that may bring about some benefit. [2 definitions] |
| opposable |
capable of being opposed or resisted. [2 definitions] |
| oppose |
to think, act, or be against; resist or obstruct. [3 definitions] |
| opposed |
not in favor of; against. |
| opposeless |
combined form of oppose. |
| opposite |
located at or on the sides opposing each other; facing. [7 definitions] |
| opposition |
the act or state of opposing, or the state of being opposed. [3 definitions] |
| oppress |
to treat harshly, brutally, or unfairly. [2 definitions] |
| oppressed |
harshly, brutally, or unfairly treated. |
| oppression |
the act of oppressing, or the condition of being oppressed. [3 definitions] |
| oppressive |
harsh, brutal, or cruel. [2 definitions] |
| opprobrious |
expressing condemnation or scorn; accusing of shameful behavior. [2 definitions] |