Gustie is of Scandinavian origin, derived from the Old Norse name Ástgeirr, which means 'spear' and 'army'. It is a gender-neutral name, but it has been more commonly used for males in recent history. The name Gustie is associated with strength, courage, and leadership due to its connection to the spear and army elements of its origin.
"Gustie experienced peak popularity between 1886 and 1926 with notable spikes in 1887, 1894, and 1919, each seeing more than seven births that year. However, it was never a consistently popular name as indicated by the wide variation in birth counts from year to year."