Word Study
out of season |
out of shape |
out of sight |
out of sorts |
out of stock |
out of the blue
| out of the ordinary
| out of the question
| out of the running
| out of thin air
| out of this world
out of the blue
WORDNET DICTIONARY
Adjective out of the blue has 1 sense
- out of the blue(s = adj.all) unanticipated, unforeseen, unlooked-for - not anticipated; "unanticipated and disconcerting lines of development"; "unforeseen circumstances"; "a virtue unlooked-for in people so full of energy"; "like a bolt out of the blue"
Adverbial out of the blue has 1 sense
- out of the blue(r = adv.all) unexpectedly - in a way that was not expected; "her brother showed up at the wedding out of the blue"
THESAURUS
out of the blue
extraordinary, improbable, more than expected, out-of-the-way, past expectation, sudden, unannounced, unanticipated, undivined, unexpected, unforeseeable, unforeseen, unguessed, unheralded, unhoped for, unpredictable, unpredicted, unprepared for, without warning
For further exploring for "out of the blue" in Webster Dictionary Online