Synonyms for Individualistic (same or very similar meaning)
WordNet sense 1 (marked by or expressing individuality):
individualist
WordNet sense 2 (being or characteristic of a single thing or person):
individual, single
WordNet sense 3 (with minimally restricted freedom in commerce):
laissez-faire
WordNet sense 4 (favoring or practicing capitalism):
capitalist, capitalistic
From the ODE community, based on WordNet
add/edit