noun
more than a year; over a year
Used in formal or written contexts to indicate a period exceeding one year. Often appears in phrases like 年余にわたる (spanning more than a year).
年余にわたる調査の結果が発表された。
The results of the investigation, which spanned more than a year, were announced.
彼は年余の努力の末、目標を達成した。
After more than a year of effort, he achieved his goal.
Compound of 年 (year) and 余 (excess, more than). The reading ねんよ follows standard on'yomi.