Correct spelling for the English word "un chaster" is [ˈʌn t͡ʃˈe͡ɪstə], [ˈʌn tʃˈeɪstə], [ˈʌ_n tʃ_ˈeɪ_s_t_ə] (IPA phonetic alphabet).
"Un chaster" is not a recognized or commonly used term in the English language, and does not currently have a standardized dictionary definition. It appears to be a combination of the prefix "un-", meaning "not" or "opposite of", and the word "chaster", which refers to someone who practices chastity or leading a pure and modest lifestyle.
However, based on the parts of the term itself, one could speculate on a possible meaning. Using the prefix "un-" to signify "not" or "opposite of" may suggest that "un chaster" refers to someone who does not practice or embody chastity. It could imply a lack of restraint or self-control when it comes to matters related to purity or abstinence, potentially suggesting a more promiscuous or unrestrained lifestyle.
It is important to note that without any specific context or established usage, defining "un chaster" beyond its literal interpretation becomes speculative. The term may be a neologism, regional slang, or simply a typographical error. If there is a specific usage or intended meaning for "un chaster," additional information or context would be necessary for a more precise definition.