full: holding or charged with as much as it can take, or amounting to the complete measure
At its core this word describes something filled to capacity. A bowl heaped with flour, a field thick with grain, a road strewn with abandoned gear, a valley packed with bones: each is said to be full because nothing more would fit and nothing is missing.
The same word reaches past physical containers to people and places that are saturated with a quality. A man can be full of wisdom or full of the blessing of the Lord, a city full of justice, a heart full of evil. The picture is identical, only the contents have changed from grain or wine to a moral or spiritual quality that fills the person through and through.
A third use stretches the idea to a complete amount rather than a filled space. To pay the full price is to hand over the entire sum with nothing held back, and a man full of years has reached the complete span of a life. In every use the thread is the same: a measure that is whole and lacking nothing.
Because the word covers all of these at once, English has to choose: full, filled, complete, whole. The Hebrew simply says the thing is at its limit, and lets the setting decide whether that limit is a brimming jar, a saturated soul, or a price paid in full.