vocal, expressed, articulated, verbal, conversational.
2. unwritten, word-of-mouth, parol, nuncupative, viva voce.
3. mouthlike, orificial, mandibular, maxillary, Anat. buccal.
4. oral examination, examination, quiz, quizzing, questioning, trial, test, doctor's oral, master's oral, viva voce examination, Inf. viva; audition, hearing.
orate, v. declaim, speak, perorate, proclaim, hold forth; make a speech, soapbox, make an address, prelect, lecture; sermonize, preach, eulogize; soliloquize, apostrophize; speechify, harangue, rant, rail, spout, Inf sound off; mouth, talk big, rodomontade,
oration, n. formal speech, allocution, address, valedictory, lecture, prelection; recitation, monologue, soliloquy, apostrophe; sermon, preachment, homily, eulogy, panegyric; declamation, discourse, disquisition, dissertation, treatise; tirade, harangue, Inf stump speech, Inf spiel,
orator, n. public speaker, speechmaker, declaimer; lecturer, prelector, speaker, reader, reciter; rhetor, rhetorician, Speech, elocutionist; sermonizer, preacher; demagogue, spellbinder,
oratorical, adj. 1. rhetorical, Speech, elocutionary, declamatory; eloquent, articulate, well-spoken, silver-tongued, Archaic, facund, Obs. facundious, Ciceronian; (all of speech) poetic, graceful, easy, facile, flowing, fluent, glib, slick, smooth, smoothtongued.
2. (all of speech) expressive, cogent, telling; forceful, emphatic, spirited, vigorous, impassioned, trenchant, vehement, burning; effective, persuasive, impressive.
3. mouthy, ranting, railing, spouting; bombastic, pompous, orotund, fustian, pretentious; grandiose, magniloquent, grandiloquent, Johnsonian, Ossianic, sonorous, sesquipedalian.
oratory, n. rhetoric, art of public speaking, declamation; eloquence, power of speech, forcefulness, expressiveness, cogency; elocution, diction, address, articulation, enunciation; gift of gab, command of words, way with words, Archaic, facundity; (all of speech) fluency, facility, ease, glibness, slickness, smoothness.
orb, n. 1. heavenly or celestial body, sun, star, planet, moon.
2. sphere, globe, orbit, ball, round, globoid; globule, spherule, spheroid, oval.
3. eye, Anat. orbit, eyeball, Sl. glim, Sl. peepers,
orbicular, adj. orbiculate, orblike, round, rounded, rotund, bulbous, bulb-shaped; spherical, spheric, spheral, spheroidal, spheroidic, spherelike, spherular; global, globular, globulous, globe-shaped, globate, globoid, globose, globelike; oval, ovate, oviform, ovoid, egg-shaped; elliptical, ellipsoidal, circular, cycloid, cycloidal, ringlike, annular, ring-shaped; cylindrical, cylindroid; bell-shaped, campanulate; pear-shaped, pyriform.
orbit, n. 1. revolution, circumgyration, circle, circuit, cycle, round; turn, circumvolution, rotation, cir-cumrotation; path, course, track, trajectory.
2. course, pattern, routine.
3. orb, sphere, ball. See - orb (def 2).
-v. 4. revolve, circle, encircle; rotate, turn, cir-
orchestra, n. 1. symphony orchestra, symphony, philharmonic, string orchestra, Music, string ensemble; chamber orchestra, quartet; symphonic band, band, combo.
2. orchestra pit, pit; U.S. main floor, parquet, parquet circle, orchestra circle, parterre.