This is the 8252nd most frequent Japanese word.
幾多
"幾多" means "many" or "numerous" in English.
幾多 is used here to denote 'many' or 'numerous' difficulties that were experienced.
幾多の困難を乗り越えて、成功をつかんだ。
After overcoming many difficulties, success was achieved.
幾多 in this sentence is used to indicate 'numerous' awards that recognize an individual's accomplishments.
彼の業績は、幾多の賞によって認められている。
His achievements are recognized by numerous awards.
In this example, 幾多 conveys the idea of 'many' or 'various encounters' contributing to changes in life.