The word "un tired" is spelled as /ʌn ˈtaɪərd/. The prefix "un-" means "not," while "tired" means "exhausted or fatigued." Therefore, "un tired" means "not tired." We can break down the word's transcription into two parts; the "un-" has a schwa sound followed by the "n" consonant, and "tired" is pronounced like /ˈtaɪərd/ with a long "i" sound, the "r" consonant, and a silent "e" at the end. When combined, it creates a new meaning: not experiencing exhaustion or fatigue.
The word "untired" is derived from the prefix "un-" which means "not" or "lack of", and the word "tired", which comes from the Old English term "tyrian" meaning "to exhaust or weary". By adding the negating prefix "un-" to "tired", it creates the opposite meaning, suggesting a lack of exhaustion or weariness.