stepdame, step-dame (n.)
Cym I.vii.1 [Innogen alone] A father cruel, and a step-dame false
Cym II.i.57 [Second Lord alone, of Innogen] a father by thy step-dame governed
MND I.i.5 [Theseus to Hippolyta, of the moon] She lingers my desires, / Like to a stepdame or a dowager / Long withering out a young man's revenue
TC III.ii.192 [Cressida to Troilus] As false / As ... stepdame to her son