Is FINKS a Wordle Word?

Yes. FINKS is a valid Wordle word.

It is not on the Wordle answer list, so it is unlikely to be a daily answer.

Plurals ending in S are almost never chosen as Wordle answers.

What does FINKS mean?

To ponder, to go over in one's head.“Idly, the detective thought what his next move should be.”
To communicate to oneself in one's mind, to try to find a solution to a problem.“I thought for three hours about the problem and still couldn’t find the solution.”
To conceive of something or someone (usually followed by of; infrequently, by on).“I tend to think of her as rather ugly.”

4 more verb definitions

To be of opinion (that); to consider, judge, regard, or look upon (something) as.“At the time I thought his adamant refusal to give in right.”
To guess; to reckon.“I think she’ll pass the examination.”
To plan; to be considering; to be of a mind (to do something).
To presume; to venture.

Definition from Wiktionary, available under the CC BY-SA license.

Starter word rating: WeakIn the top 82% of all valid Wordle words for testing common letters.
Vowels: I
Unique letters: 5 of 5
Common letters: I

Hard-mode trap: 14 valid words fit the pattern _INKS. If you reach it, you may need several guesses to find the last letter.

Letter ratings use how often each letter appears in Wordle answers.

Tap its tiles to the colours Wordle showed, and the Wordle Solver lists every word that still fits, with the best next guess.