Length (of time or space); in Old English also height, stature. at the lengh: in the long run.

The fact or quality of being long, esp. in relation to physical size or the passage of time; the degree or extent to which something is long…

The action of endure, v.

The quality or fact of being long; opposed to shortness. †of length: long.

The action of continue, v.; continuation, continuance; abiding.

The fact or property of lasting a long time; long continuance or duration; durability.

The quality of being perdurable; continuous duration; immortality; permanence.

Of a thing: the quality or state of enduring; continuation; long-lastingness. Also (quot. 1500): stability.

The action, fact, or state of lasting or remaining; continued or enduring existence or duration; continuation, persistence.

= perdurability, n.

The action of enduring or capacity to endure indefinitely; continuous duration; existence having neither beginning nor end.

Remaining or going on in a state; continuous existence or operation; continuance; prolongation.

Long duration or continuance; lastingness.

Long duration; protractedness; the quality or fact of lasting for a long time. Cf. prolix, adj. 1. Obsolete.

Duration or continued existence in time. Also, power of lasting, capacity of continued existence.

The action of sustaining or maintaining something. Also: the result of this; maintenance, preservation, upkeep. Cf. sustentation, n. II. Now rare.

The quality of lasting or enduring; permanence, durability. Obsolete.

Continuance for a long time in a settled and recognized position, status, etc.; long continued existence; an instance of this (now rare). Chiefly in o…

With reference to time: (long) continuance or duration; †a long period of time (obsolete). Somewhat rare after 17th cent.

Duration without end; perpetuity.

Continuance, endurance; continuing state.

Continued or prolonged existence or occurrence; duration; continuance.

the fact or quality of living or lasting for a long time; longevity.

Permanence, lasting quality, capacity for enduring.

the quality of being prolonged.

the quality of being imperdible; indestructibility.

Long duration or continuance.

The state or character of being endurable.

The quality of being lengthy; prolixity.

The quality of being endurable.

The state or quality of being perennial (in various senses). Also: †something that is perennial (obsolete).

Of a thing, activity, etc.: long duration of existence; (also) the period of existence or functionality.

long duration or extent.

The quality of being enduring.