overlarge /əʊvəˈlɑːdʒ/adjective 1adverb 1forms 2 adjective1 •Excessively large; too big; oversize.After a couple of years without pruning, the shrub had grown overlarge and completely obscured the window. adverb1 •(no longer used) Too extravagantly, overconfidently. formsmore overlarge · most overlarge