All justifiable antonyms

adjective justifiable

• indefensible — not justifiable; inexcusable: indefensible behavior.
• illegal — forbidden by law or statute.
• illegitimate — born of parents who are not married to each other; born out of wedlock: an illegitimate child.
• improbable — not probable; unlikely to be true or to happen: Rain is improbable tonight.
• invalid — an infirm or sickly person.
• prohibited — to forbid (an action, activity, etc.) by authority or law: Smoking is prohibited here.
• unacceptable — capable or worthy of being accepted.
• unlawful — not lawful; contrary to law; illegal.
• unlikely — not likely to be or occur; improbable; marked by doubt.
• unreasonable — not reasonable or rational; acting at variance with or contrary to reason; not guided by reason or sound judgment; irrational: an unreasonable person.
• unsuitable — not suitable; inappropriate; unfitting; unbecoming.
• wrong — not in accordance with what is morally right or good: a wrong deed.
• unjustifiable — capable of being justified; that can be shown to be or can be defended as being just, right, or warranted; defensible: justifiable homicide.
• unwarranted — authorization, sanction, or justification.