Definition

1. Adjective:
   • Having the nature or habits of a parasite; living off another: Describes an organism, person, or entity that lives in or on another organism (a host) from which it derives nutrients, often harming the host. It can also describe a person who habitually relies on or exploits others for personal gain.
   • Relating to or caused by parasites: Pertaining to the characteristics, effects, or origin of parasites.

Examples of Usage

• Adjective:
  • The parasitical vine slowly choked the life from the ancient oak tree.
  • He was criticized for his parasitical lifestyle, living off his family's wealth without contributing anything.
  • The doctor diagnosed a parasitical infection from the contaminated water.

Advanced Usage

• "parasitical relationship": A relationship where one party benefits at the expense of the other.
  • The corporation's parasitical relationship with the small suppliers eventually led to their bankruptcy.
• Used figuratively to describe systems or behaviors that drain resources.
  • The critics argued that the new tax was a parasitical burden on the middle class.

Variants and Related Words

• Parasitic (adj): The more common variant, identical in meaning.
  • Parasitic wasps are used in biological pest control.
• Parasite (n): The organism or person exhibiting parasitical behavior.
  • The tapeworm is a common intestinal parasite.
• Parasitism (n): The state or practice of being a parasite; the biological relationship.
  • The study focused on the evolution of parasitism in insects.

Synonyms

• Leechlike: Resembling a leech; clinging and draining.
• Bloodsucking: Literally feeding on blood; figuratively, exploiting others.
• Dependent: Relying on another for support (can be neutral or negative).
• Exploitative: Taking unfair advantage of someone or something.

Antonyms

• Symbiotic: Involving a mutually beneficial relationship between two different organisms.
• Independent: Not relying on another for support or existence.
• Self-sufficient: Able to supply one's own needs.

Related Phrases and Idioms

• To live off the backs of others: To benefit from the hard work of others without contributing oneself (idiomatic equivalent to being parasitical).
  • The aristocracy was accused of living off the backs of the peasantry.

Adjective

1. of plants or persons; having the nature or habits of a parasite or leech; living off another
   • a wealthy class parasitic upon the labor of the masses
   • parasitic vines that strangle the trees
   • bloodsucking blackmailer
   • his indolent leechlike existence
2. relating to or caused by parasites
   • parasitic infection