The root that means 'severe' is from the ancient, classical Greek and Latin languages. That root is auster- in Latin, and austeros in Greek. From that root derive the Latin adjective 'austerus', which means 'severe'; and the Latin noun 'austeritas', which means 'severeness, severity'.
The Latin root for reciprocal is "re-" meaning back or again, and the Greek root is "pro" meaning back or again.
The root "Struct" is Latin in origin. It comes from the Latin word "structura," meaning "a building or structure."
The root is the Latin "vīvere," meaning "to live."
Graph is a Greek root meaning "to write."
hyper is a greek root word meaning over-. υπερ- (hyper-)
The Greek root for "matri" is "mater" meaning mother, while the Latin root is "matr" also meaning mother. The Greek root for "arch" is "archos" meaning ruler or chief, while the Latin root is "archi" meaning chief or principal.
It's not a Latin root, it's Greek. Angelos in Greek simply means messenger.
The Latin root for "impartial" is "im-" meaning "not" or "without," paired with "partialis" meaning "biased." The Greek root is "a-" meaning "without" or "not," combined with "pártis" meaning "to divide" or "to share."
"Fract" is a Latin root word, derived from the Latin verb "frangere" meaning "to break."
The root "port" is a Latin root. It comes from the Latin word "portare," which means "to carry."
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The Greek root for the word "advanced" is "pro-" meaning "forward" or "in front of."