As ferforth as

as far as.

See also: Ferforth

Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
When AddDJP has "as fer forth as y knowe" instead of "as ferforth as Ifeele" (Bazire-Colledge 220/27) in a comment on the necessity of saying the prayers of the office attentively, this may not be the better reading to be followed by "and as I haue lierned"--logically it makes more sense for a feeling to be confirmed by what one has learnt.
Chaucer also prefaces Prudence's first attempt to get Melibee to stop crying by adding that she does so "as ferforth as she dorste" (VII.
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