Attest = to show, say, or prove that something exists or is true

Thousands of people came out onto the streets to attest their support for the democratic opposition party

Couples must attest to being in a committed relationship

Indispensable = necessary

We need to educate the public about the wonder and the indispensability of nature

The newspaper once had an aura of indispensability

Incessantly = in a way that never stops, especially when this is annoying or unpleasant

She talked incessantly about the most trivial things

He checks his phone incessantly

astutely = in a way that shows someone is able to quickly understand a situation and see how to get an advantage from it

They took over the company and astutely transformed it into a tech giant

She astutely observed that invisible black ice on a paved surface is not, by its nature, obvious or easy to see

MeowEng ❤️‍🔥