endlessly

continuing forever without end

• “there are infinitely many possibilities”

with unflagging resolve

• “dance inspires him ceaselessly to strive higher and higher toward the shining pinnacle of perfection that is the goal of every artiste”

(spatial sense) seeming to have no bounds

• “the Nubian desert seemed to stretch out before them endlessly”

all the time; seemingly without stopping

• “a theological student with whom I argued interminably”
• “her nagging went on endlessly”