Synonyms:
- able,
- all-comprehensive,
- all-inclusive,
- boundless,
- countless,
- endless,
- enigmatic,
- eternal,
- exhaustless,
- extending everywhere,
- illimitable,
- illimited,
- immeasurable,
- immense,
- incalculable,
- incognizable,
- incomprehensible,
- inexhaustible,
- infinite,
- infinitely continuous,
- innumerable,
- interminable,
- interminate,
- limitless,
- measureless,
- mysterious,
- no end of,
- perpetual,
- puzzling,
- sealed,
- shoreless,
- strange,
- sumless,
- termless,
- unapparent,
- unapprehended,
- unascertained,
- unbeknown,
- unbounded,
- uncharted,
- uncircumscribed,
- unclassified,
- undisclosed,
- undiscoverable,
- undiscovered,
- undivulged,
- unexplained,
- unexplored,
- unexposed,
- unfamiliar,
- unfathomable,
- unfathomed,
- unheard,
- unheard-of,
- unidentified,
- uninvestigated,
- universal,
- unknowable,
- unknown,
- unlimited,
- unmeasurable,
- unmeasured,
- unnumbered,
- unperceived,
- unrevealed,
- unsuspected,
- untold,
- untouched,
- virgin,
- without bound,
- without end,
- without limit,
- without measure,
- without number