Words Starting OP & Ending N

• challenge the accuracy, probity, or propriety of

• a personal belief or judgment that is not founded on proof or certainty

• a message expressing a belief about something; the expression of a belief that is held with confidence but not substantiated by positive knowledge or proof

• a belief or sentiment shared by most people; the voice of the people

• the legal document stating the reasons for a judicial decision

• the reason for a court's judgment (as opposed to the decision itself)

• a vague idea in which some confidence is placed

• an antibody in blood serum that attaches to invading microorganisms and other antigens to make them more susceptible to the action of phagocytes

• the right to buy or sell property at an agreed price; the right is purchased and if it is not exercised by a stated date the money is forfeited

• one of a number of things from which only one can be chosen

• the act of choosing or selecting

• a segment of DNA containing adjacent genes including structural genes and an operator gene and a regulatory gene

• retinal protein formed by the action of light on rhodopsin

• affording unobstructed entrance and exit; not shut or closed

• affording free passage or access

• used of mouth or eyes

• (set theory) of an interval that contains neither of its endpoints

• ready or willing to receive favorably

• open and observable; not secret or hidden

• a clear or unobstructed space or expanse of land or water

• where the air is unconfined

• a tournament in which both professionals and amateurs may play

• information that has become public

• with no protection or shield

• open to or in view of all

• not having been filled

• accessible to all

• not defended or capable of being defended

• (of textures) full of small openings or gaps

• having no protecting cover or enclosure

• not brought to a conclusion; subject to further thought

• not sealed or having been unsealed

• without undue constriction as from e.g. tenseness or inhibition

• not requiring union membership

• possibly accepting or permitting

• affording free passage or view

• openly straightforward and direct without reserve or secretiveness

• ready for business

• cause to open or to become open

• start to operate or function or cause to start operating or functioning

• become open

• begin or set in action, of meetings, speeches, recitals, etc.

• spread out or open from a closed or folded state

• make available

• become available

• have an opening or passage or outlet

• make the opening move

• afford access to

• display the contents of a file or start an application as on a computer