deranged

Unable to think or behave reasonably because of serious mental problems.

• The attacker appeared deranged.
• The film features a deranged killer.
• His deranged threats frightened everyone in the room.

Similar words: insane, mad, unhinged

Opposites: sane

Common phrases: deranged killer, deranged attacker, completely deranged

Deeply disturbed or confused, especially in the way someone thinks or feels.

• His thoughts seemed deranged.
• Fear had left her in a deranged state.
• The story follows a man whose mind becomes increasingly deranged.

Similar words: disturbed, unbalanced

Opposites: balanced

Common phrases: deranged mind, deranged thoughts, mentally deranged

Not working properly or unable to work.

• The clock’s mechanism was deranged.
• A deranged engine brought the journey to an end.
• The technician repaired the deranged machinery.

Similar words: malfunctioning, inoperative

Opposites: functional

Common phrases: deranged mechanism, deranged machinery, deranged system