brooding

Broody; incubating eggs by sitting on them.

A brooding hen can be aggressive.

Deeply or seriously thoughtful.

You like T. S. Eliot's "The Waste Land"? You must be so brooding and deep.

his brooding good looks and distinct Scottish brogue won him legions of fans worldwide.

A spell of brooding; the time when someone broods.

The lyrics are different: gone are the dreamy, un-self-conscious proclamations of affection from the EP (which was reissued with additional tracks), replaced with vividly dark broodings, thick with doubt and fear.