Capable of being perceived very clearly.
Separate in place; not conjunct or united; with from.
Different from one another (with the preferable adposition being "from").
Noticeably different from others; distinctive.
(of an adjective) Describing a quality that cannot normally be varied because it is extreme (e.g. freezing), absolute (e.g. dead), or classification (e.g. nuclear).
That cannot be graded.
Any adjective that is not gradable.