How Do You Spell IMPENETRABL?

Correct spelling for the English word "impenetrabl" is [ɪmpˈɛnɪtɹˌabə͡l], [ɪmpˈɛnɪtɹˌabə‍l], [ɪ_m_p_ˈɛ_n_ɪ_t_ɹ_ˌa_b_əl] (IPA phonetic alphabet).