What is the meaning of Stifly?

Stiffly, firmly, unmoveably; in a way that makes something or is difficult or to move or manipulate.

Bravely, heroically, daringly; in a commendable way.

Powerfully; mightily, strongly.

With strong resolve; unyieldingly or strong-mindedly.

Repeatedly, obstinately; adamantly; without giving up.

Bloodily, injuriously, woundingly; in a way causing injury or challenge.

Profoundly, meaningfully, in an in-depth way.

Speedily; in a fast or rushed manner.

Angrily, hatefully.

Source: wiktionary.org