indefeasibly

B has an "indefeasibly vested remainder" certain to become possessory upon termination of A's life estate.

A future interest is absolutely (or indefeasibly) vested if its beneficiary must (legally) eventually take possessory ownership.

It is unacceptable for fundamental human rights - which include indefeasibly freedom of expression and consequently freedom of the press - to be called into question.

A vested remainder may be indefeasibly vested, meaning that it is certain to become possessory in the future, and cannot be divested.

It looks as if a false belief could never be indefeasibly justified since there would always be some truth (even if only the negation of the false belief) whose addition would destroy the justification.

However, it is more accurate to define the Forced Heirship as a mere limitation to the deceased's Freedom of Testation, so some portions must be indefeasibly transferred to the forced successors, all or any of them, with equal or uneven portions.