dilatory UK /ˈdɪlət(ə)ɹi/US /ˈdɪləˌtɔɹi/ adjective3 •Slow or tardy. •Intentionally delaying (someone or something), intended to cause delay, gain time, or adjourn decision.Alva, as usual, brought his dilatory policy to bear upon his adversary with great effect. — 1856 •Relating to dilation; dilative.