Fixed or immovable in position; not liable to give way or become displaced. Also figurative. Obsolete.

Of a material thing or its condition: Able to maintain its place or position; presenting resistance to displacement; not easily shaken or dislodged…

That cannot be shaken; firmly fixed, stable.

Settled, firm, steady (physically). Obsolete.

Securely or steadily fixed, not easily moved or shaken, stable.

Reliably or continually provided or existing; continuing without interruption; stable; spec. (of employment) secure; not temporary or casual.

In good physical condition; strong, sound, well; also, firm, steady; in quot.1722, adv.