Antonym: mindful. Similar words: endless, endlessly, boundless, groundless, soundlessly, kindle, kindled, brindle. Meaning: ['maɪndlɪs] 
adj. 1. lacking the thinking capacity characteristic of a conscious being 2. requiring little mental effort 3. not mindful or attentive 4. devoid of intelligence 5. not marked by the use of reason.
adj. 1. lacking the thinking capacity characteristic of a conscious being 2. requiring little mental effort 3. not mindful or attentive 4. devoid of intelligence 5. not marked by the use of reason. 
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1 The film is full of mindless violence.
2 A moment of mindless violence snuffed out his life.
3 She wasn't at all the mindless little wife so many people perceived her to be.
4 It seems that the attack was a gratuitous/random/mindless act of violence.
5 His drinking bouts often ended in acts of mindless violence.
6 He views his opponents as a mindless rabble.
7 Doug was watching something mindless on television.
8 We explored the whole town, mindless of the cold and rain.
9 I'm afraid it's fairly mindless work - opening mail and keying data into a computer.
10 After lunch we explored the city, mindless of the rain.
11 It's not just mindless entertainment, it's a film with a message.
12 Somebody goes and does something mindless like that and just destroys everything for you.
13 Cannon errs in labeling his critics as mindless pessimists.
14 Hawa was thus equated with mindless passion.
15 Stuffing envelopes is mindless work.
16 It's tiring and mindless work.
17 The killings were an act of mindless brutality.
18 They've described the incident as mindless stupidity.
19 It was a brutal and mindless attack.
20 The movie is full of mindless violence.
21 Mindless gentry - with a single decent exception.
22 Distressed by mindless vandalism that destroys trees and flowers they are keeping a watchful eye on plant life.
23 And if so,(www.Sentencedict.com) why are bees so thoroughly mindless in other contexts?
24 Dusseldorf remains the capital of mindless extravagance; ostentation rules the KO.
25 The film was damned by the critics for its mindless violence.
26 It's a crying shame that police have to put up with these mindless attacks.
27 By itself, it is easy to interpret this ability as some sort of mindless, automatic exercise in trigonometry.
28 The fate of the monastic libraries serves in popular imagination as a classic example of mindless iconoclasm.
29 This is a macabre impersonation of a white racist's worst nightmare or crowd-baiting at its most mindless.
30 She gripped his clothing to hold her up, and plunged fathoms deep, mindless, soaring.
More similar words: endless, endlessly, boundless, groundless, soundlessly, kindle, kindled, brindle, swindle, dwindle, spindle, rekindle, needless, wordless, cordless, heedless, cloudless, regardless, regardless of, needless to say, irregardless, candle, handle, bundle, trundle, handlebar, manhandle, bundle up, mishandle, roman candle.