Pronunciation: [ˈʌn sˈiːe͡ɪbə͡lə] (IPA)
Correct spelling for the English word "un seeabler" is [ˈʌn sˈiːe͡ɪbə͡lə], [ˈʌn sˈiːeɪbələ], [ˈʌ_n s_ˈiː__eɪ_b_əl_ə] (IPA phonetic alphabet).
Correct spelling for un seeabler