adverb
equally; evenly; similarly; alike
Describes things being treated, distributed, or happening in the same way or to the same degree.
資源を等しく分配する。
Distribute resources equally.
二人は等しく責任がある。
Both are equally responsible.
adverb
just as; as soon as; the moment (that); immediately upon
Used in the pattern ...と等しく to mean 'at the same time as' or 'immediately after'. Often found in formal or written contexts.
彼が到着すると等しく会議が始まった。
The meeting began just as he arrived.
ドアが開くと等しく客がなだれ込んだ。
The moment the door opened, customers poured in.
Adverbial form of the adjective 等しい (ひとしい, 'equal'), derived from classical Japanese. The kanji 等, 斉, and 均 all carry meanings related to equality or uniformity.