The Collaborative International Dictionary
Understander
Understander \Un`der*stand"er\ ([u^]n`d[~e]r*st[a^]nd"[~e]r), n.
One who understands, or knows by experience. [R.]
--Dryden.
Wiktionary
understander
n. One who understands something.
Usage examples of "understander".
She was partly lured by an unlooked-for understander of her plight, but equally was stung by his understanding.
Such men do not remain mere critics and understanders with their intellect.