option

1 something that is not necessary in itself but adds to the convenience or performance of the main piece of equipment <a slew of options that would add several thousand dollars to the base price of the car> Synonyms accoutrement (or accouterment), adapter (also adaptor), add-on, adjunct, appendage, appliance, attachment, accessoryRelated Words accompaniment, additive, complement, supplement; auxiliary, subsidiary; amenity, doodad, embroidery, extra, filler, frill, incidental, luxury, nonessential, nonnecessity; appurtenances, bells and whistles, equipment, furnishings, habiliment(s), paraphernalia, trappings; adornment, decoration, embellishment, enhancement, garnish, ornament, trim, trimmingNear Antonyms essential, necessity, requirement, requisite

2 the power, right, or opportunity to choose <you will have the option to select one of several quite different health insurance plans> Synonyms alternative, discretion, druthers [dialect], election, liberty, choice, pick, preference, selection, volition, wayRelated Words determination, free will, will; say, voice, vote; inclination, liking, partiality, penchant, predilection, proclivity, propensity, tendency; discernment, judgment (or judgement), perspicacityNear Antonyms coercion, duress, force; duty, obligation; Hobson's choice