Euphonious- Having a pleasant sound Euphoria- feeling of well being
idiot from the Geek Word ιδιώτης [ithiotis], meaning the one who acts in private, not participating in public life; the one who aims for his own wealthy at the expense of the public interest
The word alphabet comes from the first two letters of the Greek alphabet: alpha and beta.
Actually the root is Latin: the verb vigilare, "to remain awake".
Astro - Greek for 'star'