Anticipator

to realize beforehand; foretaste or foresee:
to anticipate pleasure.
to expect; look forward to; be sure of:
to anticipate a favorable decision.
to perform (an action) before another has had time to act.
to answer (a question), obey (a command), or satisfy (a request) before it is made:
He anticipated each of my orders.
to nullify, prevent, or forestall by taking countermeasures in advance:
to anticipate a military attack.
to consider or mention before the proper time:
to anticipate more difficult questions.
to be before (another) in doing, thinking, achieving, etc.:
Many modern inventions were anticipated by Leonardo da Vinci.
Finance.

to expend (funds) before they are legitimately available for use.
to discharge (an obligation) before it is due.

to think, speak, act, or feel an emotional response in advance.
Historical Examples

And, in fine, Dor must be regarded as an anticipator of the Entente cordiale.
In the Heart of Vosges Matilda Betham-Edwards

verb (mainly transitive)
(may take a clause as object) to foresee and act in advance of: he anticipated the fall in value by selling early
to thwart by acting in advance of; forestall: I anticipated his punch by moving out of reach
(also intransitive) to mention (something) before its proper time: don’t anticipate the climax of the story
(may take a clause as object) to regard as likely; expect; foresee: he anticipated that it would happen
to make use of in advance of possession: he anticipated his salary in buying a house
to pay (a bill, etc) before it falls due
to cause to happen sooner: the spread of nationalism anticipated the decline of the Empire
v.

1530s, “to cause to happen sooner,” a back-formation from anticipation, or else from Latin anticipatus, past participle of anticipare “take (care of) ahead of time,” literally “taking into possession beforehand,” from ante “before” (see ante) + capere “to take” (see capable).

Later “to be aware of (something) coming at a future time” (1640s). Used in the sense of “expect, look forward to” since 1749, but anticipate has an element of “prepare for, forestall” that should prevent its being used as a synonym for expect. Related: Anticipated; anticipating.