knock against

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Definition

Verb (transitive or intransitive): * To make contact or collide with something, often accidentally or with a degree of force. It implies a physical impact, typically one that is not intended or is somewhat clumsy.

Usage

The verb "knock against" describes the action of hitting or bumping into an object or surface. It often carries a nuance of the impact being unintentional, slight, or a result of carelessness. * It can be used both transitively (knock something against something) and intransitively (knock against something). * It is commonly used for everyday, minor collisions.

Examples
  • Transitive use: (She accidentally hit her elbow on the doorframe.)
  • Intransitive use: (The chair hit the wall.)
  • Transitive use: (I caused the vase to hit the table.)
Advanced Usage
  • "to knock one's head against a brick wall": This is an idiom meaning to try repeatedly to do something that is hopeless or to reason with someone who is completely unreceptive.
    • Trying to get him to change his mind is like knocking my head against a brick wall.
  • The phrase can sometimes imply a repeated or persistent action of bumping into something.
Variants and Related Words
  • Knock (verb): A more general term for hitting something to make a noise or to cause impact. ("Please knock on the door.")
  • Bump into (phrasal verb): A very close synonym, often used for accidental collisions with people or objects. ("I bumped into an old friend at the store.")
  • Run into (phrasal verb): Can be synonymous with "collide with," especially for vehicles or more forceful impacts. ("The car ran into a tree.")
Synonyms
  • Bump into
  • Hit
  • Strike
  • Collide with
  • Bang into
Related Phrasal Verbs
  • Knock about/around (something): To be present in a place, or to treat something roughly.
    • That old vase has been knocking about the attic for years.
  • Knock down: To cause something or someone to fall by hitting them.
    • The strong wind knocked down several trees.
Related Idioms
  • Knock on wood: A phrase said to avoid bad luck, often while touching something made of wood.
    • I've never been in an accident, knock on wood.
  • Knock it off: An informal command telling someone to stop doing something annoying.
    • You're being too loud, knock it off!
Verb
  1. collide violently with an obstacle
    • I ran into the telephone pole

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