Definition

1. Verb (intransitive):
   • To suddenly move or pull one's body, head, or an object backward, often in a sharp, startled, or aggressive motion.
   • (Of an animal, especially a horse) To rise up on its hind legs.

Usage

• This verb describes a sudden, often involuntary, backward movement. It is typically used to describe a reaction to surprise, fear, threat, or pain. When describing an animal like a horse, it specifically means the action of lifting the front part of its body off the ground.

Examples

• As a reaction to fear or surprise:
  • The loud bang made the cat rear back in alarm.
  • She reared back when she saw the spider on her desk.
• As a reaction to a threat or in protest:
  • The boxer reared back before throwing a powerful punch.
  • He reared back in his chair, offended by the comment.
• Describing an animal's action:
  • The stallion reared back on its hind legs.
  • A rattlesnake will often rear back before striking.

Advanced Usage

• "to rear back in horror/shock/disgust": This collocation emphasizes a strong emotional reaction causing the backward movement.
  • The audience reared back in horror during the scary scene.
• The action implies a preparation for a subsequent action, such as striking, throwing something, or speaking forcefully.

Variants and Related Words

• Rear (verb): Can mean to rise up, as in "The horse reared." It also means to care for and raise young.
• Flinch: To make a quick, nervous movement as an instinctive reaction to fear or pain. (A synonym for the startled reaction sense).
• Recoil: To suddenly spring or flinch back in fear, horror, or disgust. (A close synonym).

Synonyms

• Flinch
• Recoil
• Shy away (for a hesitant reaction)
• Lurch backward

Related Phrasal Verbs

• Shy away: To avoid something due to fear or lack of confidence. While related, it implies avoidance more than a physical jump.
  • He tends to shy away from confrontation.

Related Idioms

• No common idioms are directly formed with "rear back." The phrase itself functions descriptively within sentences.

Verb

1. start with anger or resentment or in protest
2. rear backwards on its hind legs
   • the frightened horse reared back