(Singapore, Philippines, Malaysia, transitive, colloquial); Third-person singular simple present indicative form of on

Initialism of Office for National Statistics.

(Ireland) A serving of fish and chips.

plural of one and one

(slang, MLE) on one's own

Alternative form of one-on-one

Individually in succession; one at a time.

Matching each member of one set with exactly one member of another set. / (chiefly UK) Involving direct communication between two people.

A personal relationship between two people.

(chiefly Canada, US) Involving direct communication or competition between two people. / (sports) Involving one attacker and one defender. / (mathematics) bijective or injective