Garrulous (adj): talkative, chatty

He is gregarious and garrulous; he loves to hang out with the gang and gab

Gauche( adj) unskillful, awkward, maladroit

These days, gauche trends to describe social, rather than physical, ineptness.

Opposite: dextrous

Genre (n) a type or category, especially of art or writing

 

Genteel (adj) refined, polite, aristocratic, affecting refinement

The ladies at the ball were too genteel to accept our invitation to the wrestling match.

Gesticulate ( v): to make gestures, especially when speaking or in place of speaking

The speaker gesticulated in such a strange way that the audience paid more attention to her hands than to her words.

Glut (n): surplus, an overabundance

The international oil shortage turned into an international oil glut with surprising  speed.

Grandiloquent (adj) pompous, using a lot of big fancy words in an attempt to sound impressive

The new minister’s grandiloquence got him in trouble with deacons, who wanted him to be more restrained in his sermons.

 

Grandiose (adj)

The NaSa’s grandiose plan was to build a huge shopping center on the surface of the moon.

Gratuitous (adj) given freely (said of something bad), unjustified, unprovoked, uncalled for

The scathing review of the movie contained several gratuitous remarks about the love life of the director.

Gravity (n) seriousness

At the heart of the word gravity is the word grave, which means serious.

Gregarious (adj) sociable, enjoying the company of others

 

Guile (n) cunning, duplicity, artfulness

He used guile, not intelligence, to win the spelling bee: he cheated.

Beguile: deceive