- involving an extremely important decision or result; decisive; critical: a crucial experiment.
- severe; trying.
- of the form of a cross; cross-shaped.
Origin of crucial
SynonymsSee more synonyms on Thesaurus.com
Examples from the Web for crucially
And--crucially--if no one gets 50 per cent of the vote, the top two candidates face off on December 6th.Election Day In The Big Sleazy
November 2, 2014
Crucially, however, government whips have begun to ask Conservative MPs how they would vote on two separate questions.Britain Is Preparing for Military Strikes Against ISIS
September 4, 2014
And, crucially, what next for these so-called lost women, for the lost girls who have been failed so miserably?The Psychology of Sex Slave Rings
August 31, 2014
Most crucially, Happy Valley revolutionizes the connection between rape and suspense.The Feminist Aesthetic of ‘Happy Valley’: A Refusal to Eroticize Violence Against Women
August 31, 2014
She also, and most crucially, sought the advice of David Fincher (The Social Network, House of Cards).Courteney Cox Gets Personal About Her Directorial Debut, ‘Just Before I Go’
April 29, 2014
- involving a final or supremely important decision or event; decisive; critical
- informal very important
- slang very good
Word Origin and History for crucially
1706, "cross-shaped," from French crucial, a medical term for ligaments of the knee (which cross each other), from Latin crux (genitive crucis) "cross" (see cross (n.)). The meaning "decisive, critical" (1830) is extended from a logical term, Instantias Crucis, adopted by Francis Bacon (1620); the notion is of cross fingerboard signposts at forking roads, thus a requirement to choose.