say it: STEE-plee
steeply is an adverb meaning "in a steep manner". It is pronounced /ˈstipli/ — STEE-plee. It carries one recorded sense.
in a steep manner
“the street rose steeply up to the castle”
Definitions, synonyms and semantic relations for steeply come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.