Strong's #267: amarturos (pronounced am-ar'-too-ros)
from 1 (as a negative particle) and a form of 3144; unattested:--without witness.
Thayer's Greek Lexicon:
̓́
amarturos
1) without witness or testimony, unattested
Part of Speech: adjective
Relation: from G1 (as a negative particle) and a form of G3144
Usage:
This word is used 1 times:
Acts 14:17: "he left not himself without witness, in that he did good, and gave us rain"