以至 Traditional form: 以至 Pinyin (reading): yǐzhì Definitions: down to up to to such an extent as to ... also written 以至於/以至于 (yǐzhìyú) Characters: 以 - according to; so as to; because of; then 至 - reach, arrive; very, extremely Traditional characters: 以 - according to; so as to; because of; then 至 - reach, arrive; very, extremely