WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
noun.
fear of the unknown or unfamiliar or fear of making decisions
noun.
fearfulness in venturing into new and unknown places or activities
Word Usage
"And gumption is always welcome (whereas the timorousness of anonymity will be quashed -- c.f. the A-Z of the blog I can't be bothered linking to at the moment)."