Correct spelling, explanation: junior is the standard spelling of the word in English. English follows certain spelling conventions inherited from Latin and other languages. The ending -ior is a common suffix in English for comparative forms, especially for words borrowed from Latin, such as superior, inferior, and senior. The word junior follows this pattern, indicating its comparative form (often used to mean younger or lower in rank). There is no linguistic basis or precedent for adding an extra -u after the -o in junior. English words derived from Latin comparatives don’t add an extra vowel after the -i. Juniour is incorrect and not a recognized variation in English spelling.

Definition of junior:
1. Noun, a person with low rank or status compared with others
The junior was eager to learn from the experienced team members and quickly adapted to the new environment.
Although he was just a junior, he impressed everyone with his innovative ideas during the meeting.
2. Adjective, for or denoting young or younger people
The school organized a special event for the junior students to celebrate their achievements this semester.
She was chosen as the captain of the junior soccer team after demonstrating excellent leadership skills.

Collocations with junior:
Some of the most commonly used collocations include:
Junior partner: a partner in a business or law firm who has less authority, experience, or investment than a senior partner.
Despite being a junior partner, Emma had a significant say in the firm’s strategic decisions.
Junior officer: a lower-ranking officer in the military, police, or other organizations.
The junior officer was assigned to supervise the new recruits during training.
Junior employee: an employee who is new to a company or has less experience or lower status compared to others.
The junior employees were tasked with compiling data for the upcoming presentation.
Junior year: the third year of high school or college in the United States, typically associated with students aged 16-17 (high school) or 20-21 (college).
During her junior year of college, Maria completed an internship to gain practical experience in her field.

Incorrect spelling, explanation: the word junior comes from the Latin iunior, meaning younger. When this word was adopted into English, it retained its original spelling without an additional -u. Unlike some English words that have British and American spelling differences (like colour vs. color), junior has only one correct form in all varieties of English. You can’t spell junior as juniour because juniour is not a recognized or correct spelling in English. There is no historical or linguistic basis for adding an -u after the -o in junior.

Incorrect spelling

Incorrect spelling