Imprecise but close to in quantity or amount.

adjacently / contiguously

plural of approximability

Approaching; proximate; nearly resembling. / Nearing correctness; nearly exact; not perfectly accurate.

(transitive, intransitive) To estimate. / (transitive) To come near to; to approach. / (transitive) To carry or advance near; to cause to approach.

plural of approximant

The state or quality of being approximative.

Of, relating to, or being an estimate or approximation.

(grammar) A grammatical construct that expresses approximation.

The act, process or result of approximating. / (mathematics) An imprecise solution or result that is adequate for a defined purpose.