Definitions

1. adjective

relating to or characteristic of a slope that is too steep to be climbed or walked up safely; having a very great or excessive incline

“The steepish terrain of the mountain made it difficult for hikers to navigate.”

2. adverb

in a way that is too steep to be climbed or walked up safely; with a very great or excessive incline

“The car drove steepish up the winding mountain road.”