The word "un trustiest" is spelled with a prefix "un-", which means "not". The root word is "trustiest", which means "most reliable or trustworthy". The suffix "-est" indicates the superlative form of the adjective. Therefore, "un trustiest" means "least reliable or least trustworthy". The pronunciation of this word can be transcribed as /ʌn ˈtrʌst.i.əst/. It is important to spell words correctly to avoid confusion and to ensure effective communication.
The word "untrustiest" is derived from the word "untrust" with the addition of the suffix "-iest".
The word "trust" has its origins in the Old Norse word "traust", which means "confidence" or "reliability". It entered the English language through Middle English and has retained its meaning of having confidence or faith in someone or something.
The suffix "-iest" is used to form the superlative degree of adjectives in English. It is derived from Middle English and Old English, where it was spelled "-est", and ultimately comes from the Proto-Germanic "-istaz".
Therefore, when "untrusty" (meaning not to be relied or depended upon) is modified with the suffix "-iest", it becomes "untrustiest", indicating something or someone that is the least trustworthy or reliable.