'Timorousness' definitions:

Definition of 'timorousness'

noun

Fear of the unknown or unfamiliar or fear of making decisions [syn: timidity, timidness, timorousness]

noun

Fearfulness in venturing into new and unknown places or activities [syn: timidity, timorousness] [ant: boldness, daring, hardihood, hardiness]

From: GCIDE

Timorous \Tim"or*ous\, a. [LL. timorosus, from L. timor fear; akin to timere to fear. See Timid.]
1. Fearful of danger; timid; deficient in courage. --Shak. [1913 Webster]
2. Indicating, or caused by, fear; as, timorous doubts. "The timorous apostasy of chuchmen." --Milman. [1913 Webster] -- {Tim"or*ous*ly}, adv. -- {Tim"or*ous*ness}, n. [1913 Webster]