ἀγαθός

Etymology
Possibly from, from , from +  +. Compare 🇨🇬 from same roots.

Beekes notes that if the glossing synonyms and  are related to, one would be forced to assume  borrowing instead.

Adjective

 * 1) good, brave, noble, moral, gentle
 * 2) fortunate, lucky
 * 3) useful