The quality of being endless.

everlastingness, eternal existence.

The quality or attribute of being infinite or having no limit; boundlessness, illimitableness (esp. as an attribute of Deity).

The quality, condition, or fact of being everlasting; = eternity, n. 1. Endless existence; perpetual continuance. Hence: unlimited durability.

Immeasurableness, boundlessness, infinity.

The quality or condition of being infinite; infinitude, infinity. Boundlessness, illimitableness.

Infinited or infinitated condition.

The condition or fact of being unlimited; freedom from limitation.

The quality of being immense; immeasurableness, infinity; vastness, hugeness. Now usually expressed by immensity, n.

The quality of being incomprehensible: = incomprehensibility, n. (in senses 1 and 2).

= indefinitude, n. 1. Obsolete.

The quality or fact of being unlimited; absence of limitation.

Unlimitedness, boundlessness.

The quality or attribute of being infinite; boundlessness. Also in hyperbolical sense: Immensity, vastness (cf. infinite, adj. 1b).

Incapability of being comprised or circumscribed within limits; boundlessness, infinitude.

The condition of not being circumscribed or limited; boundlessness, infinitude.

the state of always existing.

Apparently intended to mean ‘boundlessness’.

The condition of having no known or assignable limit; undefined or undefinable number or amount. Obsolete.

The quality of being interminable; interminableness.

The quality of being interminable; endlessness.

the quality of being illimited, unlimited quality or degree.

The quality or condition of being illimitable; illimitableness; boundlessness.

The quality of being illimitable; boundlessness.

(un-, prefix1 affix 6.)