lightheaded, coward, faint-hearted, shadowy, scary, weak, light-headed, fearsome, vague, diffident, timorous, shy, swooning, dim, pusillanimous, faint, unsure, irresolute, skittish, light, feeble, wispy, mousy
cowardly (part of speech: adjective)
frightened (part of speech: adjective)
frightened, petrified, terror-stricken, scared stiff, unnerved, fearful, apprehensive, lily-livered, terrified, afraid, timid, horrified, paralyzed, harrowed, alarmed, rattled, chicken-livered, startled, jittery, cowardly, intimidated, weak-kneed, anxious, agitated, scared
- But now we know it's not for the fainthearted. - "Syndrome", Thomas Hoover.
- In the year 1808, Prussia was no longer fainthearted; it began to raise its head hopefully, and looked about for aid. - "Pictures of German Life in the XVIIIth and XIXth Centuries, Vol. II.", Gustav Freytag.
- United with the Spanish cavalry, these traitorous defenders of Antwerp dashed in pursuit of those who had only been fainthearted. - "Project Gutenberg History of The Netherlands, 1555-1623, Complete", John Lothrop Motley.