Rare noun meaning an inquiry or question, often used in formal or written contexts. The verb 伺う (うかがう) is far more common.
I have an inquiry regarding this matter.
Standard kanji spelling for this rare noun.
Mixed kana spelling; may be easier for learners to read.
Nominalized form of the humble verb 伺う (うかがう, 'to ask, to visit'), combined with 事 (こと, 'thing, matter'). The exact historical derivation is uncertain, but it follows a common pattern of forming abstract nouns.