An unspecified amount of (something uncountable).
A certain, an unspecified or unknown.
A considerable quantity or number of.
approximately, about (with a number).
A certain proportion of, at least two.
An unspecified quantity or number of.
A remarkable.
Of a measurement: approximately, roughly.
To a certain extent, or for a certain period.
An indefinite quantity.
An indefinite amount, a part.
A certain number, at least two.