adjective (bumpier; -est) Date: 1865 having or covered with bumps , 2. marked by bumps or jolts , marked by or full of difficulties , bumpily adverb bumpiness noun
BUMPY
Meaning of BUMPY in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012