CEFR Level
pursuing high principles or ideals; unrealistically optimistic
"She has an idealistic view of changing the world."
Relating to or based on a system of ideas or beliefs.
"The two parties are divided by deep ideological differences."
Peculiar or individual; relating to an idiosyncrasy.
"He has an idiosyncratic approach to problem-solving."
Not authorized by law, rules, or standards; not recognized as valid.
"The court ruled the contract to be illegitimate."
To light up or make something clearer.
"Streetlights illuminate the road at night."
the act of lighting something or making something clear
"The street was filled with bright illumination from the lamps."
Well known, respected, and admired for past achievements.
"She had an illustrious career in medicine."
perfectly clean, neat, or free from flaws
"Her room was immaculate, with everything in its place."
Not important or relevant; lacking physical substance.
"The judge ruled that the argument was immaterial to the case."
the state of not being fully developed emotionally, mentally, or physically; lack of maturity
"His immaturity made it difficult for him to handle responsibility."
Too great or extreme to be measured.
"Her kindness brought him immeasurable happiness."
the quality of being immoral; behavior that violates accepted moral standards
"The community condemned the immorality of the corrupt officials."
the state of living forever; eternal life or lasting fame beyond death
"Many ancient cultures believed that heroes could achieve immortality through great deeds."
to preserve the memory of someone or something forever
"The statue was built to immortalize the hero’s sacrifice."
Decline in physical or mental functionality
"Sleep deprivation leads to cognitive impairment."
Impossible to travel along or over.
"The road became impassable after the heavy snowfall."
Filled with or showing great emotion.
"She gave an impassioned speech about human rights."
Perfect; without flaws or faults.
"She delivered an impeccable performance on stage."