some

The word some keeps it vague. When you have some time to kill, you've got an unspecified amount of time — it could be five minutes or five hours.

The word some sounds like sum which means "a total quantity or amount." However, some, unlike sum, refers to an unspecified amount. If you have some money in your pocket, who knows the sum of that amount? Some can also refer to an unknown person or thing. If a person you don't know shows up, you might refer to him as "some guy."

Definitions of some
  1. adjective
    quantifier; used with either mass nouns or plural count nouns to indicate an unspecified number or quantity
    “have some milk”
    some roses were still blooming”
    “having some friends over”
    some apples”
    some paper”
    Synonyms:
    many
    a quantifier that can be used with count nouns and is often preceded by `as' or `too' or `so' or `that'; amounting to a large but indefinite number
    few
    a quantifier that can be used with count nouns and is often preceded by `a'; a small but indefinite number
    any, whatever, whatsoever
    one or some or every or all without specification
    both
    (used with count nouns) two considered together; the two
    several
    (used with count nouns) of an indefinite number more than 2 or 3 but not many
    see moresee less
    Antonyms:
    no
    quantifier; used with either mass nouns or plural count nouns for indicating a complete or almost complete lack or zero quantity of
    all
    quantifier; used with either mass or count nouns to indicate the whole number or amount of or every one of a class
    nary
    (used with singular count nouns) colloquial for `not a' or `not one' or `never a'
    none
    not any
    zero
    having no measurable or otherwise determinable value
    each
    (used of count nouns) every one considered individually
    every
    (used of count nouns) each and all of the members of a group considered singly and without exception
    every last
    (used as intensive) every
    every
    each and all of a series of entities or intervals as specified
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  2. adjective
    relatively many but unspecified in number
    “they were here for some weeks”
    “we did not meet again for some years”
    Synonyms:
    many
    a quantifier that can be used with count nouns and is often preceded by `as' or `too' or `so' or `that'; amounting to a large but indefinite number
  3. adjective
    relatively much but unspecified in amount or extent
    “we talked for some time”
    “he was still some distance away”
    Synonyms:
    much
    (quantifier used with mass nouns) great in quantity or degree or extent
  4. adjective
    remarkable
    “that was some party”
    “she is some skier”
    Synonyms:
    extraordinary
    beyond what is ordinary or usual; highly unusual or exceptional or remarkable
  5. adverb
    (of quantities) imprecise but fairly close to correct
    some forty people came”
    synonyms: about, approximately, around, close to, just about, more or less, or so, roughly
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