In a strong, fixed position; in a firm or definite way; firmly, fixedly.

So as to be difficult to detach or separate; tightly, securely, closely. Also in figurative contexts, typically referring to steadfast or loyal…

With a great deal of effort, energy, or force; strenuously, vigorously; assiduously; fiercely; (in early use occasionally) intensely, profoundly…

Firmly, securely, fast.

? securely.

In a secure manner; firmly, fast.

Stiffly, firmly, tightly, hard, etc. Phrase, to give it to someone (pretty) stiff: to speak severely to, to rate.

Firmly, closely, securely; so as not to allow any movement: = tightly, adv. 3.

Securely, closely. rare.

Tightly, firmly. Obsolete.

Firmly, securely.

in a bracing manner, so as to brace.