Exam: Cambridge English: C1 Advanced (CAE)

Definition: Describing a word that does not change form to show grammatical features like tense or case, even though it belongs to a category of words that usually do change form.

Example: In Latin, some adjectives are indeclinable, meaning they do not change their endings based on gender or number.

Definition: Not proper or suitable; lacking good manners or taste.

Example: His indecorous behavior at the formal event shocked everyone.

Definition: In a way that is not proper or socially acceptable; behaving in a manner that goes against good manners or taste.

Example: He spoke indecorously at the formal dinner, shocking the guests with his rude comments.

Definition: The quality of behaving in a way that is not proper or socially acceptable.

Example: His indecorousness at the formal event made everyone uncomfortable.

Definition: A situation or behavior that is inappropriate or not proper, often showing a lack of good manners or taste.

Example: His indecorum at the formal dinner shocked everyone present.

Definition: Someone who is tireless and never seems to get tired, continuing to work or do things without stopping.

Example: Her indefatigable spirit inspired everyone around her to keep going, no matter the challenges they faced.

Definition: In a way that shows great effort and never gets tired; always working hard without stopping.

Example: She worked indefatigably on her project, putting in long hours every day.

Definition: The quality of being unable to be defeated or annulled; it refers to something that cannot be overturned or invalidated.

Example: The indefeasibility of her rights was recognized by the court.

Definition: Something that cannot be canceled, changed, or made invalid.

Example: The contract provided an indefeasible right to the property.

Definition: In a way that cannot be annulled or made void; permanently or unchangeably.

Example: The rights granted to the citizens are indefeasibly protected by the constitution.