virtuous, good, goodness
譱 centers on moral excellence: being virtuous, good, and possessing goodness. The meanings are closely linked as expressions of an upright character.
譱 is an older variant of 善. It combines 言 (speech) with 羊 (sheep), suggesting that virtuous speech is a mark of goodness. The exact historical development is uncertain, but the component relationship is clear.
The top 羊 (sheep) and bottom 言 (words) together suggest gentle, good words: a sheep's soft bleating is like virtuous speech. 譱 is all about goodness.
For ゼン, imagine a Zen master speaking only virtuous words: Zen -> ゼン, and the master's speech is pure goodness.