an outward sign; an indication
something, esp a fact, that gives proof or reasons for believing or agreeing with something; specif information used, e.g. by a court, to arrive at the truth
in evidence
to be seen; conspicuous
turn King's/Queen's evidence
Brit said of an accomplice: to testify for the prosecution in court
evidential /-ʹdensh(ə)l/ adj
evidentially /-ʹdensh(ə)li/ adv
evidentiary /-ʹdenshəri/ adj
[Middle English via French from late Latin evidentia, from Latin evident-, evidens: see evident]