expression, suru verb (special)
wait for the right moment; bide one's time; have an arrow ready to shoot
Literally 'to hold a fully drawn bow', used idiomatically for waiting until the perfect opportunity arises before acting. Often used in formal or literary contexts.
See also: 満を持す
彼は満を持して新事業を始めた。
He waited for the right moment and then launched his new business.
満を持して発表された新製品は、大きな話題を呼んだ。
The new product, announced after careful timing, caused a great stir.