lecturer

noun

1 this year's Reith lecturer is a journalist:

public speaker, speaker, speech-maker, orator, declaimer, preacher;

rhetorician.

2 a lecturer in economics:

university teacher, college teacher, tutor, reader, instructor, scholar, don, professor, fellow, doctor, researcher;

academic, academician, pedagogue, educator, educationalist;

informal boffin, egghead;

rare preceptor.