tentacle

IPA/ˈtentəkl/
KK[tˈɛntəkəl]IPA/ˈtentəkl/

tentacle — noun

  • tentaclesingular
  • tentaclesplural

1. a long, thin body part that grows from the head or mouth area of some sea creatu

1.nounB1
Definition

a long, thin body part that grows from the head or mouth area of some sea creatures, used to feel, grab food, move, or hold onto objects

Example

The octopus curled one of its tentacles around the diver's wrist and held on tightly.

subject + curled + tentacle(s) + around + object

Naoko watched a squid shoot past, its long tentacles trailing behind in the dark water.

Common collocations
  • long tentacle
  • sticky tentacle
  • tentacle of the octopus
  • tentacle of the squid
  • tentacle curled
  • tentacle reached
  • tentacle brushed
  • tentacle wrapped
  • tentacle grabbed
Synonyms
  • arm

    often used interchangeably in everyday speech, though scientists distinguish arms from tentacles based on sucker placement

  • feeler

    informal, also used for insect antennae; less precise than tentacle

  • appendage

    more general and formal; covers any limb-like part of an animal

Grammar Patterns

the tentacle(s) + of + sea creature

possessive + tentacle(s)

Usage Note

Often used in the plural form (tentacles) because most tentacled animals have more than one. Common verbs include curl, wrap, reach, extend, and brush.

Common Mistakes

The squid grabbed the fish with its legs.
The squid grabbed the fish with its tentacles.
Sea creatures that have tentacles do not have 'legs'; tentacle is the correct anatomical term.
The octopus has eight tentacles' (when referring to the arms of an octopus).
The octopus has eight arms and two tentacles.
Marine biologists distinguish arms (suckers along the whole length) from tentacles (suckers only at the tip); in everyday English, tentacle is widely used for both.

2. the far-reaching and unwanted influence of a powerful organization, system, or n

2.nounC1
Definition

the far-reaching and unwanted influence of a powerful organization, system, or network, which is difficult to escape or resist

Example

The media company's tentacles spread across television, newspapers, and online news sites.

possessive + tentacles + spread across [plural domains]

Adaeze tried to leave the organization, but its tentacles already controlled her daily life.

Common collocations
  • tentacles of the corporation
  • tentacles of the system
  • tentacles of the government
  • tentacles spread
  • tentacles extended
  • tentacles reached into
  • tentacles of power
  • escape the tentacles
  • tentacles of the cartel
  • tentacles of organized crime
Synonyms
  • influence

    neutral word; does not carry the grasping or threatening connotation of tentacle

  • reach

    suggests scope and range but not the sense of being trapped or controlled

  • grip

    stronger and more forceful, but less common for abstract organizational power

  • hold

    general term for control; softer and less vivid than tentacle

Antonyms
  • independence

    the opposite of being controlled by an outside force

  • freedom

    the state of being free from unwanted influence

Grammar Patterns

the tentacles of + organization/system

possessive + tentacles + reach/spread/extend into

Usage Note

Almost always used in the plural form tentacles, even when the subject is singular. The subject is typically a large bureaucracy, corporation, cartel, or invasive system. Common in political and investigative journalism.

Common Mistakes

The company's tentacle reached the city.
The company's tentacles reached the city.
The figurative sense is nearly always plural.

Word family

  • tentacled
    adjectiveC2
  • tentacular
    adjectiveC2
  • tentacle-like
    adjectiveC2

Synonym discussion

Sense: noun/2

All four words describe the power an entity has over people or situations, but tentacle is the most vivid and negative. Influence is the broadest and most neutral — a musician has influence over fans, but that is not a tentacle. Reach suggests geographical or institutional scope without implying harm; a charity can have a wide reach. Grip is stronger, implying a tight hold that is hard to break, but it tends to be used for personal or psychological control (the grip of fear). Control is the most direct and factual, naming the end result of power rather than how it feels. Use tentacle when you want to emphasize that the power grabs, spreads, and traps unwillingly: "The conglomerate's tentacles stretched into factories, banks, and newsrooms." Use influence for normal persuasion, reach for range, grip for tightness, and control for the fact of being in charge.

tentacle ↗influence ↗reach ↗grip ↗control ↗

Common collocations

Phrases

  • tentacle-like
  • with tentacles
  • tentacles of

Prepositions

Etymology

LatinNew LatinEnglish

Tentacle comes from the New Latin word tentaculum, meaning 'a feeler' or 'an instrument for touching.' This was built from the Latin verb tentāre (to feel, to try, to attempt), which is also the root of tentative and attempt. The word entered English in the 1700s as a scientific term for the flexible limb of an invertebrate. By the 1800s, writers had begun using tentacle figuratively to describe any grasping, spreading influence — a metaphor that has grown even more common in modern journalism.