n. 1 speech, address, talk, discourse, disquisition, treatise, dissertation, paper, lesson, instruction, sermon, declamation, harangue, diatribe, philippic, screed The preacher delivered a lecture on the evils of drink 2 reproof, reprimand, rebuke, criticism, censure, reproach, scolding, upbraiding, chiding, berating, tongue-lashing, remonstration, Colloq dressing-down, telling-off, Slang Brit wigging, US and Canadian chewing-out I had to listen to another lecture about staying out late
v. 3 make or deliver or give a speech or address or talk, discourse; sermonize, hold forth, moralize, pontificate, orate, preach, declaim, expound, go on about, harangue She lectures on Chinese art of the 18th century He insists on lecturing to everyone he meets. 4 reprove, reprimand, rebuke, reproach, scold, upbraid, berate, chide, tongue-lash, remonstrate with, rail at, fulminate against; admonish, warn; Colloq dress down, tell off, send (someone) away or off with a flea in his or her ear, Slang Brit wig, US and Canadian chew out She is always lecturing me about keeping my room tidy