at every opportunity; whenever possible; with every little thing
Used when someone does something repeatedly or habitually whenever a situation arises, often with a critical or exasperated tone.
He complains at every opportunity.
My mother calls me whenever she gets the chance.
Standard kanji-kana mixed spelling.
Variant using the kanji 毎 for ごと.
Phrase composed of 事 (thing, matter), ある (to exist), and ごとに (every time). Literally 'every time there is a thing'.