Definition

Adverb: * In a crucial manner; to a crucial or decisive degree: Indicates that something is of the utmost importance or is a vital, essential factor in a situation.

Usage

The adverb "crucially" is used to modify an adjective (e.g., important) or an entire clause to emphasize that the point being made is of critical, decisive importance. It highlights the factor that makes the difference between success and failure, or between truth and falsehood.

Examples

• Modifying an adjective:
  • The witness's testimony was crucially important to the case.
  • We need crucially relevant data before we can proceed.
• Modifying a clause:
  • Crucially, the experiment's results were reproducible.
  • The plan is sound; crucially, it is also affordable.
  • Crucially, he must meet us at the airport, or we will miss our connection.

Advanced Usage

• In formal or analytical writing: "Crucially" is often used to introduce the most significant point in an argument or analysis.
  • The theory explains the observed phenomena. Crucially, it also predicts new ones.
• To contrast with other factors: It can be used to single out one factor as more important than others that have been mentioned.
  • The software is fast and user-friendly. Crucially, however, it is also secure.

Variants and Related Words

• Crucial (adjective): Of decisive importance; critical.
  • Making the right choice is crucial.
• Cruciality (noun): The quality of being crucial. (Less common)

Synonyms

• Decisively
• Critically
• Vitally
• Pivotally
• Essentially (in some contexts)

Antonyms

• Unimportantly
• Inconsequentially
• Trivially

Adverb

1. to a crucial degree
   • crucially important
   • crucially, he must meet us at the airport