Definition

1. Adverb:
   • By a factor of nine; multiplied by nine: This adverb describes an increase, decrease, or multiplication where the final amount is nine times the original amount.

Usage

• The phrase "nine times" is used to indicate multiplication or a proportional change. It is often followed by an adjective (like "larger") or used with a verb to show the result of multiplication.
• It is commonly seen in mathematical, financial, scientific, and general comparative contexts.

Examples

• Adverb:
  • The company's profits grew nine times over the last decade.
  • This new material is nine times stronger than the old one.
  • He can run nine times the distance he could last year.

Advanced Usage

• "nine times out of ten": An idiomatic expression meaning "almost always" or "in the vast majority of cases." This is a fixed phrase where "nine times" does not refer to literal multiplication.
  • Nine times out of ten, the simplest solution is the best one.

Variants and Related Words

• Ninefold (adj. & adv.): Consisting of nine parts or being nine times as great or as numerous. This is a more formal synonym.
  • Adjective: a ninefold increase in capacity.
  • Adverb: The population has increased ninefold.
• Times (preposition): Used to indicate multiplication (e.g., ).

Synonyms

• Ninefold: By a factor of nine.
• Multiplied by nine: Increased ninefold.

Related Phrases

• Nine times as many/much: A common comparative structure.
  • We need nine times as much water to fill the larger tank.
• Increase ninefold: A verb phrase meaning to become nine times greater.
  • Demand is expected to increase ninefold.

Related Idioms

• Nine times out of ten: As mentioned in Advanced Usage, this idiom means "very frequently" or "almost always."
  • He's late nine times out of ten.

Adverb

1. by a factor of nine
   • my investment has increased ninefold