The indefinite article to indicate one object in a class of objects

1. One or some or every or all without specification; SYN. whatever, whatsoever.
2. (In negative statements) Either every little or very great but unspecified.

ETYM French certain, from Late Lat. certanus, from Latin certus determined, fixed, certain, orig. p. p. of cernere to perceive, decide, determine.
1. Established beyond doubt or question; definitely known.
2. Definite but not specified or identified.
3. Having or feeling no doubt or uncertainty; confident and assured; SYN. sure.
4. Certain to occur; destined or inevitable; SYN. sure.
5. Exercising or taking care great enough to bring assurance; SYN. sure.
6. Capable of being depended on; SYN. sure. + prikaži više

ETYM Old Eng. one, on, an, as. än.
(Homonym: won).
1. Being one in number--a single unit or thing.
2. Being the single appropriate individual of a kind; only.
3. Used of a single unit or thing; not two or more.
4. Having the indivisible character of a unit; SYN. unitary.
5. Of the same kind or quality.
6. Indefinite in time or position.
7. Particular but unspecified.
8. Being a single entity made by combining separate components.
9. Used informally as an intensifier. + prikaži više

ETYM Old Fren., from Late Lat. separalis, from Latin separ separate, different. Related to Sever, Separate.
1. Distinct and individual.
2. (Used with count nouns) Of an indefinite number more than 2 or 3 but not many.

ETYM Old Eng. som, sum, as. sum; akin to os., OFries., and Old High Germ. sum, od. som, Dutch sommig, Icel. sumr, Dan. somme (pl.), Swed. somlige (pl.), Goth. sums, and Eng. same.
(Homonym: sum).
1. Quantifier; used with either mass nouns or plural count nouns to indicate an unspecified number or quantity.
2. Relatively many but unspecified in number.
3. Relatively much but unspecified in amount or extent.
4. Unknown or unspecified.
5. (Informal; slang) Remarkable. + prikaži više