insatiable

insatiable — adjective

1. used to describe a desire, need, or interest that is so strong that no amount of

1.adjectiveB2
Definition

used to describe a desire, need, or interest that is so strong that no amount of what you want will ever feel like enough to make you fully content.

Example

Theo's curiosity about machines was insatiable — he took apart every clock in the house.

linking verb + insatiable + about + noun

No praise could satisfy Priya's insatiable need for approval from the people she admired.

insatiable + need + for + noun phrase

Common collocations
  • insatiable appetite / hunger / thirst (for something)
  • insatiable curiosity / desire / need (for something)
  • insatiable drive / ambition / greed
Synonyms
  • unquenchable

    stronger and more physical; often used for literal thirst or fire, but also metaphorically for desire

  • voracious

    focuses on consuming things eagerly, especially food or information; less abstract than insatiable

  • unappeasable

    very formal and less common; suggests a negative, destructive desire that cannot be calmed

Antonyms
  • satisfied

    the direct opposite state — feeling that enough has been received

  • moderate

    describes desires that are within reasonable limits, as opposed to extreme

Grammar Patterns

insatiable + noun (appetite / curiosity / desire / hunger / thirst)

be / seem / become + insatiable

insatiable + for + something

Usage Note

Almost always used before a noun (appetite, curiosity, hunger, desire, thirst, drive, ambition) or after be/seem/become followed by 'for' to specify the object of desire. Cannot be directly followed by a to-infinitive clause — instead use 'insatiable + noun + to-infinitive' as in 'an insatiable desire to…'.

Common Mistakes

She has insatiable for reading.
She has an insatiable appetite for reading.
'insatiable' is an adjective and cannot be used as a noun; it must modify a noun.
He is insatiable to learn.
He has an insatiable desire to learn.
'insatiable' cannot be followed directly by a to-infinitive.
They have insatiable hungry.
They have an insatiable hunger.
'insatiable' modifies a noun, not an adjective.

Word family

  • insatiably
    adverbC1
  • insatiability
    nounC2
  • satiate
    verbC1
  • satiable
    adjectiveC2

Synonym discussion

Sense: adjective/1

These four words all describe desires that are hard or impossible to satisfy, but they differ in tone and scope. 'Insatiable' is the most versatile — it works for both physical cravings (hunger, thirst) and abstract drives (curiosity, ambition). 'Unquenchable' is more intense and poetic, often tied to fire or literal thirst: an unquenchable thirst feels more primal than an insatiable one. 'Voracious' is narrower: it strongly implies consuming or devouring — a voracious reader tears through books, a voracious eater finishes everything on the table. 'Unappeasable' is the most formal and carries a darker tone, suggesting anger or hostility that cannot be calmed. 'Rapacious' is even more negative, implying greedy or predatory taking at others' expense. In everyday use, 'insatiable' and 'voracious' are the most common; use 'unappeasable' or 'rapacious' only when the context calls for a sharper negative edge.

unquenchablevoraciousunappeasablerapacious

Common collocations

Nouns

Adverbs

Phrases

  • an insatiable appetite for
  • an insatiable hunger for
  • an insatiable thirst for
  • an insatiable desire to

Prepositions

Etymology

LatinFrenchEnglish

From Latin 'insatiabilis', formed by the negative prefix 'in-' (not) + 'satiare' (to fill or satisfy) + '-bilis' (able or worthy). The word entered English via Old French in the late 1400s and has kept its core meaning — something that cannot be filled up — ever since.