Definitions

1. verb

to make or become obscure or indistinct; to foreshadow or indicate something vaguely

“The fog began to adumbrate the city skyline.”

2. verb

to suggest or foreshadow something vaguely; to hint at something

“The politician’s words adumbrated a major policy shift.”

3. noun

a vague indication or suggestion of something

“There was a faint adumbration of a storm on the horizon.”