Ielts vocabulary Masterclass book + ielts listening & Reading Dictionary: Dominate Proficiency Level Vocabulary for ielts listening, Reading, Writing & Speaking

Ignominious: MEANING: Embarrassing, humiliating
SENTENCE: He suffered an ignominious defeat.
Immutable: MEANING: Unchanging over time, permanent
SENTENCE: Science presents us with some immutable facts, like gravity
on planet Earth.
Impair : MEANING: Make worse, damage
SENTENCE: Listening to loud music without earplugs with almost
certainly impair your hearing over time.
Impassive: MEANING: Not showing emotion
SENTENCE: His cold, impassive face stared at the cripple begging on the
street.
Impede: MEANING: Block or obstruct progress
SENTENCE: The judge determined that the detective had not intentionally
set out to impede the progress of the investigation.
Impermeable: MEANING: Not allowing fluid to pass through, waterproof

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SENTENCE: The boat is made from impermeable wood.
Imperturbable: MEANING: Unshakeably calm
SENTENCE: Greg remained imperturbable during his exam, even the last
moments before completion didn't panic him.
Impervious: MEANING: Not affected or influenced; resistant to water or
heat
SENTENCE: The system remained impervious to all suggestions of
change.