All insignificant antonyms

adj insignificant

• meaningful — full of meaning, significance, purpose, or value; purposeful; significant: a meaningful wink; a meaningful choice.
• sensible — having, using, or showing good sense or sound judgment: a sensible young woman.
• huge — extraordinarily large in bulk, quantity, or extent: a huge ship; a huge portion of ice cream.
• useful — being of use or service; serving some purpose; advantageous, helpful, or of good effect: a useful member of society.
• valuable — having considerable monetary worth; costing or bringing a high price: a valuable painting; a valuable crop.
• worthwhile — such as to repay one's time, attention, interest, work, trouble, etc.: a worthwhile book.
• relevant — bearing upon or connected with the matter in hand; pertinent: a relevant remark.
• large — of more than average size, quantity, degree, etc.; exceeding that which is common to a kind or class; big; great: a large house; a large number; in large measure; to a large extent.
• consequential — Consequential means the same as consequent.
• important — of much or great significance or consequence: an important event in world history.
• significant — important; of consequence.
• substantial — of ample or considerable amount, quantity, size, etc.: a substantial sum of money.
• big — A big person or thing is large in physical size.
• major — Clarence, born 1936, U.S. novelist and poet.