CEFR Level
A scientist who studies fish.
"The ichthyologist discovered a new species of fish in the river."
The branch of zoology that deals with fish.
"He pursued a degree in ichthyology at the university."
Extinct marine reptiles that resembled fish and dolphins, dominant during the Mesozoic era.
"Ichthyosaurs were swift predators of the ancient seas."
A person who attacks or criticizes cherished beliefs, traditions, or institutions.
"He was known as an iconoclast who challenged old traditions."
Characterized by attacking or rejecting cherished beliefs, traditions, or established values.
"Her iconoclastic views challenged the conventional wisdom of the industry."
A distinctive or peculiar characteristic, habit, or mannerism unique to an individual.
"One of her idiosyncrasies was humming while working."
Excessively devoted or reverent towards idols or false gods.
"The ancient tribe was known for its idolatrious practices."
To worship idols; to regard with excessive devotion or admiration.
"They began to idolatrize the statue as a deity."
Excessively admiring or worshipping someone or something as an idol.
"The king was criticized for his idolatrous devotion to wealth."
Marked by shame, disgrace, or humiliation.
"The team suffered an ignominious defeat in the finals."
Having a bad or unpleasant character; unkind or malicious.
"He made an ill-natured remark about his colleague."
the quality of being impossible or difficult to read; unclear writing or print
"The doctor's handwriting was famous for its illegibility among the pharmacy staff."
The quality of being illiberal; lack of tolerance or generosity.
"The illiberality of the new laws alarmed the citizens."
Without limits or bounds.
"The universe is often described as illimitable."
A substance or device that produces light.
"The lamp acted as an illuminant in the dark cave."
a group of people claiming to have special enlightenment or secret knowledge, often linked to conspiracies
"Many conspiracy theories involve the Illuminati as a secret world-controlling group."
Extreme foolishness, stupidity, or weakness of mind.
"The plan was abandoned due to its sheer imbecility."
Extending back beyond memory or record; ancient.
"The tradition has been followed since time immemorial."
Describes liquids that do not mix together.
"Oil and water are immiscible liquids."
The state of being unable to move.
"After the accident, she suffered from immobility in her legs."
excessive; beyond reasonable limits
"He has an immoderate love for sweets."
unable to be felt by touch; difficult to grasp or understand
"There was an impalpable sense of fear in the room."
Incapable of suffering or feeling pain (used mainly in theological or philosophical contexts).
"Some philosophers argue that God is impassible and cannot experience human emotions."
Having little or no money; poor.
"He grew up in an impecunious family."