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Exam: Cambridge English: C1 Advanced (CAE)

rubicund

IPA: /ˈruːbɪkənd/

KK: /ˈruːbɪkənd/

adjective

Definition: Having a healthy, reddish color, often associated with good health or vitality.

Example: After spending a day in the sun, his cheeks were rubicund and glowing.

rubicundity

IPA: /ˌruːbɪˈkʌndɪti/

KK: /ˈruːbɪkʌndɪti/

noun

Definition: The condition of having a red or rosy complexion, often associated with health or good cheer.

Example: Her rubicundity was evident as she laughed and enjoyed the sunny day.

rubidium

IPA: //rʌˈbɪdiəm//

KK: /rʌˈbɪdɪəm/

noun

Definition: A soft, silvery-white metal that belongs to the alkali group. It can catch fire easily in air and reacts strongly with water. It is used in devices like photocells and vacuum tubes.

Example: Rubidium is used in some types of atomic clocks and research applications.

rubricate

IPA: /ˈruːbrɪkeɪt/

KK: /ˈrubrɪˌkeɪt/

transitive verb

Definition: To organize or mark something with headings or rules, often in a formal way.

Example: The teacher decided to rubricate the assignment guidelines to make them clearer for the students.

rubrication

IPA: /ˌruːbrɪˈkeɪʃən/

KK: /rubrɪˈkeɪʃən/

noun

Definition: A style of writing in which certain parts of the text are highlighted or decorated, often in red, especially in old manuscripts.

Example: The ancient manuscript featured beautiful rubrication that made the important sections stand out.

rudimental

IPA: /ˌruːdɪˈmɛntəl/

KK: /rudɪˈmɛntəl/

adjective

Definition: Relating to the basic or fundamental aspects of something; not fully developed or advanced.

Example: The students learned rudimental skills before moving on to more complex topics.

rudimentariness

IPA: /ˌruːdɪˈmɛnəˌrɪnəs/

KK: /rudɪˈmɛnəˌrɪnəs/

noun

Definition: The state or quality of being basic or simple, often referring to something that is not fully developed or is in an early stage.

Example: The rudimentariness of the technology made it difficult to use effectively.

rueful

IPA: /ˈruːfəl/

KK: /ˈruːfəl/

adjective

Definition: Feeling or showing sadness or regret about something that has happened.

Example: He gave a rueful smile when he remembered his mistake.

ruefulness

IPA: /ˈruːfəl/

KK: /ˈruːfəl/

noun

Definition: The feeling of regret or sorrow for something that has happened, often accompanied by a sense of sadness or disappointment.

Example: Her ruefulness was evident as she reflected on the mistakes she had made in the past.

rugosity

IPA: /rʌˈɡoʊsɪti/

KK: /rʌˈɡoʊsɪti/

noun

Definition: The condition or quality of having a rough or wrinkled surface.

Example: The rugosity of the coral reef provides a habitat for many marine species.

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