乃至於 nǎizhìyú and even Origin Definitions Defs Strokes Stroke Words Sentences Sents 乃至 nǎizhì and even and even; to go so far as to; indicates a progression to a more extreme or inclusive case. Similar to 甚至 shènzhì.於 yú at; in; to; from; by (variant of 于 yú) Indicates a location, scope, or time; equivalent to 在 zài