Lewis & Short

quandō-quĭdem (o scanned short, Verg. E. 3, 55; Lucr. 2, 980), adv., since indeed, since, seeing that (class.): quandoquidem tam iners, tam nulli consili sum, Ter. And. 3, 5, 2; 3, 2, 7; id. Ad. 5, 8, 33; id. Eun. 2, 3, 82: quandoquidem tu istos oratores tantopere laudas, Cic. Brut. 44, 163: quandoquidem id tale esse debet, ut, etc., id. Fin. 5, 13, 37; 5, 23, 66; Liv. 8, 33: haec detur cura censoribus, quandoquidem eos in re publicā semper volumus esse, Cic. Leg. 3, 20, 47; id. Or. 31, 112; id. Phil. 2, 3, 6; id. de Or. 3, 14, 54: dicite, quandŏquidem in molli consedimus herbā, Verg. E. 3, 55: quandŏquidem totis mortalibus adsimulata, Lucr. 2, 980; Juv. 1, 111; 10, 146; 13, 129.