also: かんじゃ
A person who watches or observes something, such as an event, scene, or phenomenon. Often used in formal or literary contexts.
He was there merely as an observer.
From the observer's perspective, the situation looks different.
Standard kanji form; the reading かんしゃ is the most common.
Alternate reading; less common and may be considered non-standard.
Compound of 観 (kan, 'to observe') and 者 (sha, 'person'). The reading かんじゃ is a variant, possibly influenced by rendaku or historical usage, but かんしゃ is standard.