mithid. 1. Pred. a. (With copula) Is ~, it is (high) time. Is ~ dom imeacht, it is time for me to go. Ba mhithid dó pósadh, it was high time he got married. Más maith is ~, that is good, but it was not before its time. 2. s. (pl. ~í).Due, convenient, time. Tháinig a mhithid duit, it is high time for you. Nuair a tháinig ar a mhithidí féin, in his own good time. Ag brath ar a, ag feitheamh lena, mhithidí, awaiting his convenience. Ní ar mo mhithidí atá, it is not for me to choose the time.