Word: Ninety

Pronunciation

/ˈnaɪnti/

Definitions

• Numeral: The number that is equal to 9 × 10; the ordinal form being ’ninetieth’. For example: “There were ninety students in the class.”

  • Adjective: Relating to the number ninety. For example: “She celebrated her ninetieth birthday last year.”

Phrases

• “In the nineties” refers to temperatures, years (e.g., the 1990s), or ages (from 90 to 99).
• “Ninety-nine percent” is often used to emphasize almost complete certainty or inclusiveness.
• “Ninety-day period” denotes a duration of three months.

Example Sentences

• Numeral: “The school library has over nine hundred books on its shelves.”
• Adjective: “She completed the ninety-mile marathon in record time.”

Synonyms

• 90
• Ninety-nine (the next consecutive number)
• XC (in Roman numerals)

Note: Unlike some words that can function as multiple parts of speech, “ninety” primarily serves as a numeral and an adjective related to the number 90. It doesn’t typically function as a noun, verb, adverb, etc., without modifying another noun (e.g., “ninety years” where “years” is the noun).