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dumb luck

dumb luck

15 3.9
Good luck that happens by chance, not because you worked for it
  • noun
  • Informal
: suerte tonta
  • He found a $100 bill on the ground; it was simply dumb luck.
  • just dumb luck
  • pure dumb luck
  • plain dumb luck

So it was a complete stroke of dumb luck there.

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Examples

Synonyms

good luck
vsdumb luck
∞ 1.0

A fortunate event that happens by chance

emphasizes absence of skill or effort in that success
good fortune
vsdumb luck
74 2.5

A lucky event or success that happens by chance

is success that happens specifically without skill or effort
lucky break
vsdumb luck
  • Informal
18 3.2

A sudden chance that helps you succeed

is the same idea but shows success without skill or effort
serendipity
vsdumb luck
14 7.9

A happy chance event that brings good results

is more general success by chance, not focused on development
stroke of luck
vsdumb luck
10 3.2

A sudden lucky event that brings good results

is similar but stresses the absence of effort or skill
benny
vsdumb luck
  • Informal
5 9.5

An extra helpful thing you get, often at work

is the same chance idea but focuses on casual benefit
devil's luck
vsdumb luck
  • Informal
1 7.5

Very good luck that happens by chance and seems undeserved

is general chance success not necessarily implying undeservedness
happy chance
vsdumb luck
1 3.9

A lucky unexpected event that brings something good

is used for chance events rather than actions involving skill
jammy stroke of luck
vsdumb luck
  • Slang
9.5

An unexpected good thing that happens by chance

is the general neutral term without British informality

How Lucky

good luck
∞ 1.0
dumb luck
  • Informal
15 3.9
fluke
42 5.1
chance event
2 3.4
bad luck
201 1.0

Surface Forms

dumb luck singular
dumb lucks plural

Morphology

dumb + luck

The noun 'luck' clearly signals chance or fortune and 'dumb' conveys lack of ability or agency, so a learner can partly infer that the phrase refers to success not due to skill. However, 'dumb' does not literally mean 'by chance' and the colloquial positive sense ('good fortune') rather than a negative assessment is not fully predictable, so the relation is only partially transparent.

Etymology

Dumb luck may come from the older use of dumb to mean 'not smart', so it creates the image of luck that happens without thinking or skill. So dumb luck means 'good luck that happens by chance rather than because someone worked for it'.