"Spunk" is a favourite Scots word for the kind of spirited courage that goes beyond mere bravery — it is life-force, vivacity, the fire that animates a person. Burns uses it to celebrate the creative spark ("Gie me ae spark o' Nature's fire") and the moral courage to stand against convention. The word's origin in the spark of fire is always present, giving it energy and urgency. In poetry "spunk" is both description and aspiration, celebrating the quality that makes poetry itself possible.

Spunk has a double etymology — from the Gaelic "spong" (tinder, touchwood) through the idea of the spark that ignites tinder, to the figurative meaning of inner fire, courage, and spirit. This origin gives the word physical immediacy: spunk is not an abstract quality but something kindled, a small fire that can either grow or be extinguished. Burns praises it in individuals and communities, celebrating the spark of life and resistance. The word's later English slang meanings are irrelevant to its use in Scots poetry but can create comic confusion for modern readers — students should be alert to contextual disambiguation. In its Scots sense, "spunk" remains a wholly admirable quality.