• retain for future use

Synonyms: put to one side, put aside, set aside, lay aside, keep back

• arrange for (a room, seat, ticket, etc.) to be kept for the use of a particular person

Synonyms: book, make a reservation for, order, arrange in advance, arrange for, prearrange for, secure

• refrain from delivering (a judgement or decision) without due consideration or evidence

Synonyms: defer, postpone, put off, delay, withhold

• a supply of a commodity not needed for immediate use but available if required

Synonyms: stock, store, supply, stockpile, reservoir, pool, fund, bank, accumulation

• a body of troops withheld from action to reinforce or protect others, or additional to the regular forces and available in an emergency

Synonyms: additional troops, fresh troops, additional police, supplementaries, auxiliaries, reserves

• an extra player who is a possible substitute in a team

Synonyms: substitute, stand-in, second-string, relief, replacement, fallback, emergency

• a place set aside for special use

• a lack of warmth or openness in manner or expression

Synonyms: reticence, self-restraint, restraint, self-containment

• (in the decoration of ceramics or textiles) an area in which the original material or background colour remains visible