His acquiescence should not be construed as a sign of weakness but meekness.

You're trying to spell "acquiescence."

Yes, the verb for acquiescence is "acquiesce." It means to accept something reluctantly but without protest.

Noun

-A silent or passive assent or submission, or a submission with apparent content; - distinguished from avowed consent on the one hand, and on the other, from opposition or open discontent; quiet satisfaction.

-Submission to an injury by the party injured, or tacit concurrence in the action of another.

That is the definition of acquiescence, did that help at all? You could always try Googling it too.

To admit a thing as true; to express one's agreement, acquiescence, concurrence, or concession., The act of assenting; the act of the mind in admitting or agreeing to anything; concurrence with approval; consent; agreement; acquiescence.