A thing committed to the trust and care of a person, to bid farewell,

a safe place, a depository, comfort, serenity, to place in good keeping, to bid farewell, to exchange pledges of mutual understanding, peace.

it is derived from Masdar/verbal noun اِسْتِيُدَاعٌ on pattern اِستفعال and only means a place where something is placed/entrusted as trust and for doing this one has to separate-depart/see that thing off which is the basic perception of its Root و د ع.

to seek out or aspire for the meaning of Measure I onto ones self.
These verbs usually carry the meaning of seeking or request.

This is called in Arabic تَكَلُّفٌ which means literally "self-charging" or "self-assigning a task" (It also figuratively means "feigning," a factitious reflexive meaning).