as to

preposition

Etymology: Middle English, from as + to

: with reference to : in regard to : as regards:

a. : about, concerning, respecting

a matter as to which opinions might differ

stopped short of their objective as to production

felt somewhat at a loss as to how to begin — Life

as to my own views, they will be mentioned later

uncertain as to what to do next

b. : according to : by

classified and graded as to size and color

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as concerning, as for, as regards or as to

For the matter of

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Main Entry: ↑as

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as to formal phrase

concerning someone or something

There is some doubt as to whether the information is totally accurate.

Thesaurus: concerning or about something_synonym

Main entry: as

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with respect to; concerning

decisions as to which patients receive treatment

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as to

1 : ↑about, 2

I'm at a loss as to how to explain the error. [=I don't know how to explain the error]

There is disagreement as to the causes of the fire.

I remained uncertain as to the value of his suggestions.

2 : ↑according to, ↑by

The eggs are graded as to size and color.

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Main Entry: ↑as