Correct spelling for the English word "unexplicit" is [ˌʌnɛksplˈɪsɪt], [ˌʌnɛksplˈɪsɪt], [ˌʌ_n_ɛ_k_s_p_l_ˈɪ_s_ɪ_t] (IPA phonetic alphabet).
The word "unexplicit" is formed by adding the prefix "un-" to the adjective "explicit".
The term "explicit" originated from the Latin word "explicitus", which means "unfolded" or "unfurled". In Latin, "explicitus" specifically referred to a book or manuscript that had reached its end or conclusion. From this original usage, "explicit" gradually developed the meaning of something that is clearly expressed, definite, or fully stated.
The prefix "un-" in English is used to negate the meaning of a word it is attached to. In the case of "unexplicit", the prefix "un-" negates the quality of being explicit, giving it the opposite meaning of something that is not expressed or clearly defined.