taru-adjective, adverb taking the 'to' particle
full of; brimming with
Describes a state where a feeling, quality, or substance fills something completely. Often used with nouns like 自信, やる気, or 水. Functions as a たる adjective or adverb with と.
彼は自信満々でプレゼンに臨んだ。
He faced the presentation brimming with confidence.
プールに水が満々とたたえ
The pool was filled to the brim with water.