'Lessened' definitions:

Definition of 'lessened'

adjective

Impaired by diminution [syn: diminished, lessened, vitiated, weakened]

adjective

Decreased in severity; made less harsh

From: GCIDE

Lessen \Less"en\ (l[e^]s"'n), v. t. [imp. & p. p. Lessened (-'nd); p. pr. & vb. n. Lessening.] [From Less, a.] To make less; to reduce; to make smaller, or fewer; to diminish; to lower; to degrade; as, to lessen a kingdom, or a population; to lessen speed, rank, fortune. [1913 Webster]
Charity . . . shall lessen his punishment. --Calamy. [1913 Webster]
St. Paul chose to magnify his office when ill men conspired to lessen it. --Atterbury.
Syn: To diminish; reduce; abate; decrease; lower; impair; weaken; degrade. [1913 Webster]