Frank
Misanthrope
A person who hates or distrusts mankind.
Progeny
Children, descendants.
Effervescent
Bubbling with high spirits, exhilarated.
Dispassionate
Not influenced by emotion; impartial.
Brusque
Rudely abrupt; curt.
Nonchalance
Casual indifference; lack of concern.
Indefatigable
Untiring.
Stoic
Seemingly unaffected by pain or discomfort.
Voracious
Ravenous; consuming or eager to consume large amounts; insatiable.
Morose
Very gloomy or sullen.