utrættelig

tireless, unflagging, untiring

* * *

adj untiring,

F tireless ( fx efforts, energy; in one's work for others),

indefatigable ( fx he was indefatigable); unflagging ( fx

energy), unremitting ( fx care, efforts);

[utrætteligt adv] -ly ( fx we will strive unremittingly to ...);

(NB indefatigably).