Loquacious means “liking to talk and talking smoothly and easily.

” Someone described as loquacious might also be called wordy (prone to using more words than necessary) or garrulous (tending to talk a lot).

// We were entertained all afternoon by our host’s loquacious parrot and its nonstop script of favored phrases.

The verb yaw when used for the action of a ship, aircraft, spacecraft, or projectile means "to move to the left or right especially in an uncontrolled manner." More broadly, yaw is used as a synonym of alternate to mean "to change from one to another repeatedly."

 // The rogue wave hit the vessel, and the ship yawed hard to the right.

// The album yaws from soulful ballad to up-tempo pop hit and back again.

Someone or something described as implacable is not capable of being appeased or changed.

// The project faced implacable resistance from community members, and is now off the table.

Xeric means "characterized by, relating to, or requiring only a small amount of moisture."

// She is a botanist who primarily studies xeric plants.

Effulgence means “radiant splendor” or “brilliance.”

// Guests oohed and aahed at the sudden effulgence of the pagoda, as the last of its hundreds of candles were finally lit.

Tacit is a formal adjective used to describe something that is expressed or understood without being directly stated.

// As roommates, we had a tacit agreement that we would never pry into each other’s affairs.

Gambol means "to run or jump in a lively way." It is used as a synonym of frolic.

// There are few sights more charming than that of lambs gamboling about in a meadow in full flower.

Perfunctory is a formal word used to describe something that is done without energy or enthusiasm because of habit or because it is expected.

// By the time my favorite band got to the last stop of the tour, their performance felt perfunctory.