Converse of object

• obviate: Even possession of a ( normally ) two-handed weapon such as the spear didn't obviate the necessity of acquiring empty-handed skills.

• underline: This underlines the necessity for clarity about what exactly is to be assessed.

• emphasize: Councilor Hussey emphasized the necessity to involve the league in any discussions regarding pitch allocations.

• realize: Successive governments have realized the necessity of our green solutions.

• dictate: The area of proposed research might also dictate the necessity of a professional qualification or experience in the field.

• eliminate: The invention may even eliminate the necessity of letter boards and spelling devices.

Converse of subject

• compel: The sense of smell, again, is compelled by necessity to refer itself to that same judgment.

Adjective modifier

• absolute: Week three: The absolute necessity of a total police state; NO freedom of dissent.

• urgent: And see that reform is not just desirable; it is an urgent necessity.

• dire: I had done that by the impulse of dire necessity, which I ought to have done at first of my own free will.

• logical: It seems, in general terms, to be a matter of logical necessity.

Preposition: of

• life: They don't have access to the very basic necessity of life.

• revolution: As workers became aware of this conflict, they would come to recognize, from their own experience, the necessity of socialist revolution.

• nature: That prior relation is a necessity of nature, if one may so speak, and not a discretionary arrangement.

Preposition: for

• survival: A swarm is a reproduction and a necessity for survival.