plain

Synonyms: apparent audible big as life broad comprehensible definite distinct evident legible lucid manifest open open-and-shut palpable patent talking turkey transparent understandable visible

Antonyms: complex complicated hidden intricate obscured unclear vague

Synonyms: abrupt artless blunt candid direct forthright frank guileless honest impolite ingenuous open outspoken rude sincere

Antonyms: abstruse ambiguous incomprehensible imperceptible obscure unclear vague

Synonyms: average common commonplace conventional dull homely lowly modest ordinary quotidian routine simple traditional usual vanilla white-bread workaday

Antonyms: abnormal complex difficult extraordinary uncommon

Synonyms: austere bare bare bones clean discreet dry modest muted pure restrained severe simple spartan stark stripped down unvarnished vanilla

Antonyms: decorated dressedup embellished formal ornate

Synonyms: deformed hard on the eyes homely not beautiful ordinary plain-featured

Antonyms: attractive beautiful pretty

Synonyms: champaign expanse field flat flatland grassland heath level meadow moor moorland open country plateau prairie steppe tundra