anything that (usually used in relative clauses)

Whatever you say is all right with me.

(used relatively to indicate a quantity of a specified or implied antecedent)

Take whatever you like of these.

no matter what

Do it, whatever happens.

any or any one of a number of things whether specifically known or not

papers, magazines, or whatever.

what (used interrogatively)

Whatever do you mean?

in any amount; to any extent

whatever merit the work has.

no matter what

whatever rebuffs he might receive.

being what or who it may be

Whatever the reason, he refuses to go.

of any kind (used as an intensifier following the noun or pronoun it modifies)

any person whatever.

(used to indicate indifference to a state of affairs, situation, previous statement, etc.)