Ant. Hesitation, stammering, dulness.
Orb. Sphere, globe, ball; circle, orbit, circuit; disk; revolution.
Orbit. Revolution, path, circuit, sphere.
Ant. Deviation, eccentricity, perturbation.
Ordain. Set, regulate, establish, appoint, decree, constitute, institute, prescribe, dictate.
Ant. Revoke, subvert, cancel, countermand.
Ordeal. Test, trial, experiment, probation, proof, scrutiny, assay, investigation.
Ant. Result, event; argument, evidence, plea, discussion.
Order. Arrangement, system, procedure, method, rule, regulation; command, mandate, rank, direction, grade, class, character, kind, management, injunction, prohibition, requirement, instruction.
Ant. Allowance, consent, leave, permission, permit, liberty, license.