A person or thing acting or serving in place of another.
Substitute
A legally recognized subject or national of a state or commonwealth, either native or naturalized.
Citizen
Make (something) suitable for a new use or purpose; modify.
Adapt
Forming an unbroken whole; without interruption.
Continuous
Cause (someone) to do something through reasoning or argument.
Persuade
Resembling without being identical.
Similar
Agreeing; accordant; congruous.
Congruent
Strengthen or support (an object or substance), especially with additional material.
Reinforce
Likely to have a strong or far-reaching effect; radical and extreme.
Drastic
Not aware of or not concerned about what is happening around one.
Oblivious
Frequency describes the number of waves that pass a fixed place in a given amount of time
Frequency
A statement that the values of two mathematical expressions are equal (indicated by the sign =).
Equation
Of two or more people fully in agreement.
Unanimous
Tentative
Not consistent or having a fixed pattern; liable to change.
Variable