Gratuitous
Pronunciation : Gra*tu"i*tous a.
Etymology : [L. gratuitus, from gratus pleasing. See Grate, a., Gratis.]
Definition : 1. Given without an equivalent or recompense; conferred without valuable consideration; granted without pay, or without claim or merit; not required by justice. We mistake the gratuitous blessings of Heaven for the fruits of our own industry. L'Estrange.
2. Not called for by the circumstances; without reason, cause, or proof; adopted or asserted without any good ground; as, a gratuitous assumption. Acts of gratuitous self-humiliation. De Quincye. -- Gra*tu"i*tous*ly, adv. -- Gra*tu"i*tous*ness, n.
Source : Webster's Unabridged Dictionary, 1913