The quality of being convenient
fitness, availability, accessibility, handiness, suitability, suitableness, appropriateness, acceptability, receptiveness, openness, adaptability, approachability, usefulness, utility, serviceability, serviceableness, expediency, practicality, nearness; see also utility 1.
Antonyms unfitness, trouble*, unsuitability.
An aid to ease or comfort
ease, comfort, accommodation, advantage, amenity, facility, help, aid, assistance, means, support, luxury, succor, personal service, the comforts of home, creature comfort, relief, satisfaction, service, benefit, avail, accessory, utility, labor saver, time saver, appliance, appurtenance, labor-saving device; see also advantage 3, aid 1, appliance, comfort 1.
Antonyms discomfort, awkwardness*, hindrance.
Time and circumstances that are convenient
leisure, ease, freedom, liberty, a free hour, a minute at liberty, preference, seasonableness, opportuneness; see also leisure.