quiescent

a. [ L. quiescens, -entis, p. pr. of quiescere: cf. F. quiescent. See Quiesce. ] 1. Being in a state of repose; at rest; still; not moving; as, a quiescent body or fluid. [ 1913 Webster ]

2. Not ruffed with passion; unagitated; not in action; not excited; quiet; dormant; resting. [ 1913 Webster ]

In times of national security, the feeling of patriotism . . . is so quiescent that it seems hardly to exist. Prof. Wilson. [ 1913 Webster ]

3. (Gram.) Not sounded; silent; as, y is quiescent in “day” and “say.” [ 1913 Webster ]

n. (Gram.) A silent letter. M. Stuart. [ 1913 Webster ]