Spartan arid ascetic austere bald bare barren candid common commonplace direct dry dull earthbound flat frank homely homespun humdrum infecund infertile insipid lean literal matter-of-fact mundane natural neat open ordinary pedestrian plain plain-speaking plain-spoken poetryless prosaic prosing prosy pure rustic severe simple simple-speaking sober spare staid stark stolid straightforward stuffy tiresome unadorned unaffected unembellished unfanciful unideal unidealistic unimaginative unimpassioned uninspired uninventive unoriginal unpoetic unromantic unromanticized unvarnished vapid