undreamed of /ˌʌnˈdriːmd-/ adjective also chiefly British undreamt of /ˌʌnˈdrɛmt-/ also chiefly British undreamt of /ˌʌnˈdrɛmt-/ Learner's definition of UNDREAMED OF
: much more or better than you thought was possible做梦都想不到的 —
usually used as undreamed-of or undreamt-of before a noun通常以undreamed-of或undreamt-of用于名词前