you do usurp yourself, for what is yours to bestow is not yours to reserve.
If I do not usurp myself, I am.
If nothing lets to make us happy both But this my masculine usurp’d attire, Do not embrace me till each circumstance Of place, time, fortune, do cohere, and jump That I am Viola: which to confirm, I’ll bring you to a captain in this town, Where lie my maiden weeds; by whose gentle help I was preserv’d to serve this noble count; All the occurrence of my fortune since Hath been between this lady and this lord.
There are no more uses of "usurp" in the play.
Show samples from other sources
Henry IV usurped the throne from Richard II while the latter was fighting in Ireland.
I believe there are more instances of the abridgement of the freedom of the people by gradual and silent encroachments of those in power than by violent and sudden usurpations.