noun a close observer; someone who looks at something (such as an exhibition of some kind)
noun (law) a person who attests to the genuineness of a document or signature by adding their own signature
Source: WordNet 3.1, Princeton University
Synonyms for witness
Other words for “witness”, grouped by meaning.
We found 11 synonyms for “witness”. The most common are witnesser, informant, spectator, viewer, watcher.