as to

preposition

1

: as for, about

at a loss as to how to explain the error

2

: according to, by

graded as to size and color

Synonyms of as to

• regarding
• toward
• as far as
• concerning
• about
• on
• as for
• as regards
• of

Examples of as to in a Sentence

I'm in a quandary as to how to deal with the problem.

Recent Examples on the Web

The Florida case is seen as one of the keys as to how Epstein's crimes were allowed to continue for several years after the first police report, and for many years before, with Maxwell's case highlighting abuse stretching back into the 1990s. —Dan Gooding, MSNBC Newsweek, 5 Dec. 2025

Jordan’s performance could be a game-changer as to whether his side wins or loses. —Michael McCann, Sportico.com, 5 Dec. 2025

The most obvious answer as to why everyone seems to be opting out of a manicure for their engagement? —Audrey Noble, Vogue, 5 Dec. 2025

Paleontologists have found tens of thousands of dinosaur tracks in South America, which offers evidence as to which species were traveling via an ancient coastline. —Julia Jacobo, ABC News, 5 Dec. 2025

Word History

First Known Use

14th century, in the meaning defined at sense 1

Rhymes for as to

• accrue
• ado
• ainu
• aircrew
• airscrew
• anew
• askew
• baboo
• babu
• bamboo
• beaucoup
• bijou

Kids Definition

as to

preposition

1

: with respect to : about

confused as to what happened

2

: according to sense 1

graded as to size