"Indefatigable" is a word in ENGLISH

indefatigable ENGLISH
Definition:

Incapable of being fatigued; not readily exhausted;
unremitting in labor or effort; untiring; unwearying; not yielding to
fatigue; as, indefatigable exertions, perseverance, application.

Few words of positivity

I can speak of our baby like this to no one else. Who but his father would linger over the exact width of his gummy little smile or the blueness of his eyes, or the sweetness of his little lick of tawny hair on his forehead?

Philippa Gregory

WORD SUGGESTIONS
Laugh your heart out.

Why do hamburgers feel sad at barbecues?They get to meet their old flames!

unable ENGLISH

Not able; not having sufficient strength, means, knowledge, skill, or the like; impotent' weak; helpless; incapable; -- now usually followed …

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