Synonyms of well-spent

1 Syllable
flush, rich
2 Syllables
fecund, gainful, breeding, childing, spawning, fruitful, blooming, copious, plenteous
3 Syllables
fertile, rewarding, successful, blossoming, prolific, profuse, abundant, plentiful, worthwhile, abounding, flourishing, useful
4 Syllables
advantageous, reproducing, fructiferous, propagating, profitable, proliferant, effective, conducive, beneficial