Vocabulary and Synonyms

'Gab' means to talk or chatter rapidly. Chatter, jabber, and blather are synonyms for talkative behavior. 'Grab' means to seize or snatch suddenly - unrelated to speech. This makes A the correct answer as the non-synonym.

'Gadabout' means someone who moves from place to place for pleasure or socializing. Wanderer, globetrotter, and traveler all describe people who move around. 'Glutton' means someone who eats excessively - unrelated to travel. C is correct as the non-synonym.

'Gadget' is a small mechanical device or tool. Apparatus, utensil, and contrivance are all synonyms for devices/tools. 'Toy' while sometimes related, typically refers to a plaything rather than a practical device, making it the best non-synonym. However, this is slightly ambiguous as toys can be gadget-like.

'Gaffe' means a social blunder or mistake. Blunder, error, and faux (from faux pas - a social mistake) are synonyms. 'Saddle' is a riding gear for horses - completely unrelated to social mistakes. B is correct as the non-synonym.

'Gangster' means a member of a criminal organization involved in crime. Hoodlum, racketeer, and ruffian all describe criminals or violent offenders. 'Vagabond' means a wanderer without a home, not necessarily a criminal. C is correct as the non-synonym.

Festival, carnival and pageant are synonymous with gala, therefore exalted is the correct answer.

Niacin is a vitamin B. The others are all synonyms. 

Galvanize means to shock or excite someone into action, similar to stimulate or impel. Stop is the opposite of galvanize - it prevents action rather than initiating it. Startle is related but means to frighten suddenly, not necessarily to spur action.

Gambol means to skip about playfully or frolic, which is best captured by dance, cavort, and frisk - all words describing playful movement. Grumble means to complain or mutter discontentedly, which has nothing to do with playful movement.

Gallop refers to a horse's fastest gait, a type of rapid movement. Race, dart, and speed all relate to moving quickly, which are synonymous concepts. Large is an adjective describing size, not a verb for movement.

Galore means in abundance or existing in large quantities. Profusion, astronomical (when referring to amounts), and large all describe plenty or abundance. Hallucinating means experiencing sensory perceptions that aren't real - a completely unrelated medical/psychological term.

Gambit refers to a strategic opening move or maneuver, especially in chess or conversation. Maneuver, move, and machination all describe planned actions or strategies. Ambit means scope, extent, or boundary - related etymologically but not synonymous with gambit's strategic action meaning.

Gallant means brave, courageous, or heroic in spirit. Intrepid, valiant, and courageous all describe bravery or fearlessness. Huge means very large in size - completely unrelated to the concept of bravery.

Gale refers to a very strong wind, typically between 32-63 miles per hour. Tempest, tornado, and hurricane all refer to strong winds or storms. Gait means a person's manner of walking - unrelated to wind or storms.

Gain means to acquire, obtain, or achieve something. Earn, achieve, and reap all describe obtaining something through effort. Dearth means scarcity or lack - the opposite of gain.