The Collaborative International Dictionary of English v.0.48:
Domineering \Dom`i*neer"ing\, a. Ruling arrogantly; overbearing. [1913 Webster] A violent, brutal, domineering old reprobate. --Blackw. Mag. Syn: Haughty; overbearing; lordly. See Imperious. -- Dom`i*neer"ing*ly, adv. [1913 Webster]WordNet (r) 3.0 (2006):
domineeringly adv 1: in a domineering manner; "his wife behaved domineeringly"