Wordnet 3.0
ADVERB (1)
1.
with good reason;
- Example: "he is justifiably bitter"
The Collaborative International Dictionary of English v.0.48:
Justifiable \Jus"ti*fi`a*ble\, a. [Cf. F. justifiable. See
Justify.]
Capable of being justified, or shown to be just.
[1913 Webster]
Just are the ways of God,
And justifiable to men. --Milton.
Syn: Defensible; vindicable; warrantable; excusable;
exculpable; authorizable. -- Jus"ti*fi`a*ble*ness, n.
-- Jus"ti*fi`a*bly, adv.
[1913 Webster]
WordNet (r) 3.0 (2006):
justifiably
adv 1: with good reason; "he is justifiably bitter" [ant:
inexcusably, unjustifiably]