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tr.v. main·tained, main·tain·ing, main·tains
1. To keep up or carry on; continue: maintain good relations.
2. To keep in an existing state; preserve or retain: maintain one's composure.
3. To keep in a condition of good repair or efficiency: maintain two cars.
a. To provide for; support: maintain a family.
b. To keep in existence; sustain: enough food to maintain life.
5. To defend or hold against criticism or attack: maintained his stand on taxes.
6. To declare to be true; affirm: maintained her innocence.
7. To adhere or conform to; keep: maintain a busy schedule.

[Middle English maintainen, from Old French maintenir, from Medieval Latin manutenēre, from Latin manū tenēre, to hold in the hand : manū, ablative of manus, hand; see man- in Indo-European roots + tenēre, to hold; see ten- in Indo-European roots.]

main·tain′a·bil′i·ty n.
main·tain′a·ble adj.
main·tain′er n.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.maintainer - someone who upholds or maintainsmaintainer - someone who upholds or maintains; "firm upholders of tradition"; "they are sustainers of the idea of democracy"
admirer, booster, protagonist, supporter, champion, friend - a person who backs a politician or a team etc.; "all their supporters came out for the game"; "they are friends of the library"
References in classic literature ?
Nay," added he, "you yourself will allow it may exist independent of all but one: so will a Mahometan, a Jew, and all the maintainers of all the different sects in the world.
A New York designer, installer and maintainer of security systems for residential, office and institutional clients - has been awarded a contract to upgrade security at Southbridge Towers, a 1,651-unit, nine-building, middle-income housing complex at the South Street Seaport in lower Manhattan.
With the help of JDSR, a maintainer trained at the basic organizational level can receive assistance from depot support personnel or an engineer and, in some cases, from the original equipment manufacturer that produced the equipment.
The discovery of a male-sterility inducing cytoplasm designated 'Wild Abortive' (WA) cytoplasm from a wild rice in China has been exploited through a three-line hybrid breeding system involving cytoplasmic male sterile (CMS/A) lines and their cognate isonuclear maintainer (B) and restorer (R) lines.
We are trying to influence the design of the plane--early on, nose to tail--in the interests of the maintainer.
Two FSV valves are needed, one at the inlet and one at the outlet of the oil level maintainer.
Typically a collection's maintainer has to assess the relevance of changes with little system aid.
Communications company Global Crossing is suing the world's largest builder and maintainer of undersea cable systems TyCo International for US$1 billion.
When the economizers give up on this behavior, they come back to the maintainer segment as "returnees.
Jeremy Howard, a maintainer with the 35th Aircraft Maintenance Squadron.
When the maintainer asked, "What seems to be the problem?
We've tried to depict (by position), how a maintainer can apply risk management on a daily basis in their job.