lay (2)EnglishOxford American Thesauruslay2 adjective 1 a lay preacher: nonclerical, nonordained, nonecclesiastical, secular, temporal; civil, civilian; rare laic, laical. ▷antonyms ordained. 2 I cannot explain to a lay audience the techniques I used to study these genes: nonprofessional, amateur, nonspecialist, nontechnical, untrained, unqualified, inexpert; dilettante. ▷antonyms qualified, professional.