I think you might be looking for tyrannos, though actually the word meant something slightly different. Many tyrannoi were indeed cruel and/or mean, but strictly speaking the Greek word just meant that they had come to power by unconventional means and was, at least originally, not pejorative.
The greek word for it is, philia, philos, philio(also mean friend)
"Euxaristw" is a Greek word that means "thank you" in English.
"spero" is not a greek word, but there is a greek male name that its spelling is alike your given word and it is "Σπύρος" (speeros). On the other hand, if you ask what is the greek corresponding for the latin "spero", then it is "ελπίζω" (elpeezo=to hope).
"Ευχαριστώ" (eucharisto) is the Greek word for "thank you." It is a common expression used to show gratitude in Greek-speaking countries.
The Greek word for enlightenment is "φωτισμός" (fotismós).
An autocratic and tyrannical ruler is 'Despotic' from the Greek word Despotikos
An autocratic and tyrannical ruler is 'Despotic' from the Greek word Despotikos
dictator
cruel = σκληρός [skleerOs] cruelty = σκληρότητα [skleerOteeta]
Not a word "creul" in Greek language. If you're asking for "cruel" translated into Greek, here it is: Cruel = ΣΚΛΗΡΟΣ, ΑΝΕΛΕΗΤΟΣ ( = Annihilator ), ΑΡΜΑΓΕΔΔΩΝ (Armageddon, EL AMARGADO* = The embitterer, The provider of bitterness). *that's the Spanish original expression for "Armageddon".
Orchestra, is: ΟΡΧΗΣΤΡΑ, ορχήστρα. If by "Orchestrer", you mean the leader of the orchestra, then is: ΟΡΧΗΓΟΣ, ορχηγός, OR: ΕΝΟΡΧΗΣΤΡΩΤΗΣ, ενορχηστρωτής.
There is no such word in Greek.
It is the Greek word for "battle".
cruel duel
In Greek, the word "collo" does not have a specific meaning. It is not a Greek word.
No, the word "crazy" does not mean perfect in either Hebrew or Greek.
mean, as in not nice or cruel: antipático to mean, as in to signify: querer decir