All serious antonyms

adj serious

• deceptive — If something is deceptive, it encourages you to believe something which is not true.
• dishonest — not honest; disposed to lie, cheat, or steal; not worthy of trust or belief: a dishonest person.
• insincere — not sincere; not honest in the expression of actual feeling; hypocritical.
• misleading — deceptive; tending to mislead.
• untrustworthy — deserving of trust or confidence; dependable; reliable: The treasurer was not entirely trustworthy.
• flippant — frivolously disrespectful, shallow, or lacking in seriousness; characterized by levity: The audience was shocked by his flippant remarks about patriotism.
• minor — lesser, as in size, extent, or importance, or being or noting the lesser of two: a minor share.
• trivial — of very little importance or value; insignificant: Don't bother me with trivial matters.
• unimportant — of much or great significance or consequence: an important event in world history.
• false — not true or correct; erroneous: a false statement.
• funny — funnies. comic strips. Also called funny paper. the section of a newspaper reserved for comic strips, word games, etc.
• happy — delighted, pleased, or glad, as over a particular thing: to be happy to see a person.
• light — a light product, as a beer or cigarette.
• unserious — of, showing, or characterized by deep thought.
• insignificant — unimportant, trifling, or petty: Omit the insignificant details.
• friendly — characteristic of or befitting a friend; showing friendship: a friendly greeting.
• facile — moving, acting, working, proceeding, etc., with ease, sometimes with superficiality: facile fingers; a facile mind.
• worthless — without worth; of no use, importance, or value; good-for-nothing: a worthless person; a worthless contract.
• meaningless — without meaning, significance, purpose, or value; purposeless; insignificant: a meaningless reply; a meaningless existence.
• little — small in size; not big; not large; tiny: a little desk in the corner of the room.
• small — of limited size; of comparatively restricted dimensions; not big; little: a small box.
• calm — A calm person does not show or feel any worry, anger, or excitement.
• easy — not hard or difficult; requiring no great labor or effort: a book that is easy to read; an easy victory.