Pronunciation: [kˈe͡ɪtˈɑː] (IPA)
Correct spelling for the English word "ktar" is [kˈe͡ɪtˈɑː], [kˈeɪtˈɑː], [k_ˈeɪ_t_ˈɑː] (IPA phonetic alphabet).
Correct spelling for ktar