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an ounce of doubt

an ounce of doubt

1 4.9
A very small feeling of being unsure about something
  • idiom
  • Informal
translation icon : un gramo de duda
  • I had an ounce of doubt about his story, but I wanted to believe him.

Examples

  • Okay, so in the end, just as I fully believed in the entire time and never had an ounce of doubt, the laptop is the better value.

  • He approached the deal with an ounce of doubt, unsure if it was too good to be true.

  • He also has no time for contemplation because he has not an ounce of doubt that the tigress represented in his brain by the outside stimuli is real and not just an effect of visual coding that he can interpret arbitrarily.

    Academic text (2003)
  • Although I trusted her completely, there was still an ounce of doubt in my mind.

Synonyms

doubt
vsan ounce of doubt
1.6

A feeling of not being sure about something

is far smaller, marking only a very small uneasy feeling rather than broad uncertainty
question
vsan ounce of doubt
2.7

A feeling of doubt about whether something is true

is a tiny amount rather than a general questioning or doubt feeling
uncertainty
vsan ounce of doubt
296 4.0

Not being sure about what will happen or what to do

is focused on a very small amount of unease rather than general unpredictability
shadow of doubt
vsan ounce of doubt
  • Informal
2 3.8

A small feeling that something might not be true

is more about a very small measurable amount rather than a vague hint
scintilla of doubt
vsan ounce of doubt
  • Formal
1 7.9

A very small feeling that something may not be true

is the same meaning but differs only in fixed phrasing and tone
dubiousness
vsan ounce of doubt
1 7.8

A feeling of doubt or not trusting something

is a much smaller hint rather than clear mistrust or unreliability
undersong of doubt
vsan ounce of doubt
  • Literature
9.9

A quiet feeling of not being sure about something

is a single tiny instance rather than a continuous background feeling
doubtfulness
vsan ounce of doubt
5.5

A feeling of not being sure about something

is much smaller and more limited than general lack of conviction
unsureness
vsan ounce of doubt
3.8

A feeling of doubt or low confidence

is narrower, indicating only a very small trace rather than broad unease
uncertainness
vsan ounce of doubt
6.0

A state of not knowing what will happen

is a small specific trace rather than an overall state of unpredictability

Antonyms

419 1.9

A belief that you can rely on someone or something

certainty
  • Literature
202 3.4

A strong feeling that something is true or will happen

How Doubtful

uncertainty
296 4.0
doubt
1.6
an ounce of doubt
  • Informal
1 4.9

Surface Forms

Morphology

an + ounce + of + doubt

The meaning 'a very small amount of uncertainty' is directly and compositionally derived from 'ounce' (a unit/measure indicating a small quantity) combined with 'doubt' (a feeling of uncertainty). This measure+noun pattern is a regular compositional device in English (and parallels exist in other languages), so a B1 learner who knows both constituents can infer the MWE meaning.

Etymology

An ounce of doubt comes from a simple image: an ounce is a very small weight, so having an ounce of doubt means having only a tiny bit of 'uncertainty'. That's why it means 'a very small amount of uncertainty'.