A kibitzer is someone who watches other people and makes unwanted comments about what they are doing.

// It wasn't long after they bought their house that the couple heard from neighborhood kibitzers offering tips on landscaping and remodeling.

Subterfuge is a formal word that refers to the use of tricks to hide, avoid, or get something.

// They obtained the documents by subterfuge.

Glaucous as a color word can describe things of two rather different shades: a light bluish-gray or bluish-white color, or a pale yellow-green. It can also mean "having a powdery or waxy coating that gives a frosted appearance and tends to rub off."

// His glaucous eyes grew wide with curiosity.

// The tree's glaucous leaves help prevent sun damage.

A scientist who specializes in studying life in the universe is an astrobiologist. Many astrobiologists focus on searching for evidence of life beyond the earth.

In simplest terms, panache refers to lively grace and style; it appears in contexts in which words like verve and flair are also applied.

// The cast of the play was excellent—even those playing supporting characters acted with great panache. 

Laudable is a somewhat formal word used to describe something as worthy of praise. It is a synonym of commendable. // Thanks to the laudable efforts of dozens of volunteers, the town's Spring Festival was an enjoyable event for everyone.

The verb cotton is used with on or on to to mean “to begin to understand something; to catch on.” Cotton used with to alone means “to begin to like someone or something.”

// It took a while, but they are finally starting to cotton on.

// She quickly cottoned on to why her friend was nudging her, and stopped talking just before their teacher entered the room.

// We cottoned to our new neighbors right away.

Adroit describes someone or something that has or shows skill, cleverness, or resourcefulness in handling situations.

// We marveled at how adroit the puppeteers were, the marionettes responding to each precise shift of their hands, each flick of their wrists.

To fawn over or on someone (usually someone important or powerful) is to try to get their approval through praise, special attention, or flattery. Fawn is also sometimes used—especially but not exclusively of dogs—to mean “to show affection.”

// Still new to celebrity, the musician blushed at the restaurant staff fawning over her during her recent hometown visit.

// I’d only been gone five minutes but the puppy fawned on me like I’d been away for hours.