Synonym: faux pas, gaucherie, slip, solecism. Similar words: affect, affectation, decaffeinated, staff, affair, afford to, traffic, can afford. Meaning: [gæf] 
n. a socially awkward or tactless act.
n. a socially awkward or tactless act. 
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1 He didn't realize what a gaffe he'd made.
2 I made a real gaffe - I called his new wife 'Judy' which is the name of his ex-wife.
3 The consul's comments were a major diplomatic gaffe.
4 Was that a bit of a gaffe then, starting to eat before everyone else had been served?
5 I had no idea of the gaffe which I was committing.
6 He made an embarrassing gaffe at the convention last weekend.
7 A cultural gaffe would invite a pounding.
8 Even with the occasional gaffe, marketers say placing products in movies is an increasingly important way to enhance exposure.
9 Nineteen-year-old songster Sebastian made his amazing gaffe as Di visited a centre for homeless youngsters.
10 A gaffe of a different order from those for which he apologized.
11 The Chargers took advantage of the gaffe on their very first play.
12 All officials were waiting to see Beigong She's gaffe.
13 The face of my gaffe,(www.Sentencedict.com) I think he should have shocked the bar!
14 Don't make gaffe here, we can discuss about this question at home.
15 Bachmann's gaffe served as a bookend to one made by Sarah Palin, the week before, when she, too, addressed the events of April, 1775.
16 Following the embarrassing Christmas Day gaffe, several senior editorial staff was suspended.
17 When she realized she had mistaken him for his brother, she was horrified at her gaffe.
18 Labor was beginning to feel its strength, and this gaffe kept many away.
19 In France, using the familiar form "tu" in a business setting would be a major gaffe.
20 The short, bitter election campaign is dominated by some unexpectedly useful economic statistics and a serious Tory gaffe over immigration.
21 NARRATOR: Attlee, a mild - mannered Christian Socialist, gave Churchill's gaffe a sinister spin.
22 History indicates that a bad performance, particularly a telling gaffe, can badly damage a candidate in the polls.
23 He would have to make amends for his monumental gaffe of earlier today.
24 Wuduo stuck out her tongue in dismay at her gaffe.
25 LOS ANGELES (Reuters) - The talent scout who turned down the Beatles has long been credited with committing the music industry's biggest gaffe.
26 Naturally[sentencedict.com], Emmons retired to the bar at the shooting venue to drink away his historic gaffe.
More similar words: affect, affectation, decaffeinated, staff, affair, afford to, traffic, can afford, baffled, affable, afflatus, affinity, offer, affliction, duffer, differ, offense, effect, offender, offering, in effect, offensive, different, differ from, take effect, difference, indifferent, effectively, differentiate, effectiveness.