Why “timelessness” is a great word
The quality of existing outside the flow of time, possessing a value or relevance that remains unaltered by passing ages. From timeless—itself from time plus the privative suffix -less (meaning 'without')—and the noun-forming suffix -ness. Unlike temporality, which denotes existence bound within and subject to linear time, or sempiternity, which implies perpetual duration through time, timelessness is a negation of time’s dominion altogether. It is the serene face of a marble statue in a forgotten garden, indifferent to noon or midnight; the stillness of a Vermeer interior, where the milkmaid’s pour will never finish; the silent, fathomless blue of a Giotto fresco. To be timeless is not to escape death but to decline the appointment—to exist in a tense the clock cannot conjugate.
Definitions & examples from Wiktionary (CC BY-SA 3.0).