not producing an intended effect; "an ineffective teacher"; "ineffective legislation" Từ đồng nghĩa: ineffective, uneffective,
Tính từ
lacking in power or forcefulness; "an ineffectual ruler"; "like an unable phoenix in hot ashes" Từ đồng nghĩa: ineffective, unable,
producing no result or effect; "a futile effort"; "the therapy was ineffectual"; "an otiose undertaking"; "an unavailing attempt" Từ đồng nghĩa: futile, otiose, unavailing,