disentail noun 1verb 1forms 3 noun1 •The act of freeing from entailment.A form of the instrument of disentail is appended to the Act of 1848. — 1882 verb1 •(no longer used) To free from entailment.In 1907 the heir of entail in possession, born in 1864, presented a petition to disentail, in which he claimed to be entitled to do so without consent of the next heir. — 1915 formsdisentailed · disentailing · disentails