Of a person, state of mind, attribute, etc.: not easily turned aside, unwavering, resolute, steadfast. Hence also: †obstinate, stubborn (obsolete).

= invariable, adj.

Of motion, dimensions, etc.: Free from fluctuation or variation in respect of quantity or amount.

Unchanging, immutable; not able or likely to change.

Unchanging.

Without diminution, unwasting.

(un-, prefix1 affix 4.)

figurative. Cleaving fast, remaining, or abiding in some thing or person; permanently indwelling. Now rare or Obsolete.

Not shifted or changed; unvarying. Obsolete.

Not liable to wax or increase.

technical. Not subject to variation in different cases; invariable: used e.g. of markings which are the same in all the individuals of a species.

Of movements, pressure, heat, light, etc.: Even, free from fluctuation in rate or intensity. rare. (With this and the next sense cf. equable, adj. 1.)

That cannot be brought to a desired form, state, condition, etc. Const. †into, to.

That cannot be diminished or lessened.

That cannot be deviated from; invariable.

Unchanging. Obsolete.

(un-, prefix1 affix 1b.)

Of things: Constant, regular. Obsolete.

(un-, prefix1 affix 4.)

(un-, prefix1 affix 4.)

Not relapsing; that does not relapse.

Not liable to fail or vary. Of properties, movements, agencies, etc.: Persisting without essential or permanent change of character.

(un-, prefix1 affix 1.)

(un-, prefix1 affix 1b.)

(un-, prefix1 affix 4.)

Invariable in presence or occurrence.

That is pursued or accepted either entirely or not at all; having no middle position or compromise available.

Having no middle position or compromise available; occurring either fully or not at all; not admitting of or amenable to modification according…

That cannot be reduced; irreducible.

(un-, prefix1 affix 1b.)

Unvarying, invariable.

Not adaptive.

Flattened or levelled; (also) in a state of little or no change; having ceased to advance or grow.

attributive (frequently with hyphen). gen.

Designating an extreme or pronounced example of something; uncompromising; persistent, entrenched. Also: radical, doctrinaire.

Maintained by, involving, or effecting homoeostasis; of or pertaining to homoeostasis.

In extended use: drab, unvarying. Also: one-sided, portrayed from one point of view.