inexpressible adjective uk/ˌɪn.ɪkˈspres.ə.bəl/ us/ˌɪn.ɪkˈspres.ə.bəl/
难以言传的,无法表达的An inexpressible feeling is too strong to be described.
The news filled him with inexpressible delight/joy/horror/pain. 这消息给他带来了无法形容的喜悦/高兴/恐惧/痛苦。
Related word: inexpressibly