"Maintained" is accurate about the job and quiet about the result, because keeping something the same doesn't sound like an achievement. It often is one. The synonyms below help you say so — serviced for equipment, upheld for standards, documented for records — as long as the bullet also says what didn't go wrong.
When you kept equipment or systems in working order: synonyms for maintained
Serviced
Scheduled maintenance on vehicles, aircraft or machinery.
Repaired
Fixing faults; add response time or cost avoided.
Calibrated
Instruments and equipment kept accurate to a standard.
Patched
Software and security updates applied on schedule.
Administered
Servers, databases and business systems you held admin rights on.
Maintained aircraft according to regulations.
Serviced a fleet of 12 regional turboprops to FAA Part 135 standards, with no maintenance-related cancellations in 2024.
When you kept a standard or number steady: synonyms for maintained
Upheld
Standards, policies and codes of practice.
Sustained
A performance level held over months or years.
Held
A metric kept stable; strong when you name the pressure alongside it.
Protected
Margins, budgets or data defended against loss.
Preserved
Data, records, buildings or relationships kept intact.
Maintained high food safety standards.
Upheld an A grade through four consecutive health inspections at a 200-cover restaurant, with daily temperature logs and a monthly deep-clean rota.
When you kept records or data up to date: synonyms for maintained
Documented
Records made to a standard, like GCP, ISO or audit rules.
Tracked
Ongoing monitoring of items, cases or spend.
Logged
Time-stamped entries: incidents, calls, calibrations.
Updated
Kept existing records current; the weakest here, so add volume.
Maintained participant records for clinical trials.
Documented 300 trial-participant visits to GCP standards; the site passed its sponsor audit with no major findings.
Leave these in the thesaurus
"Perpetuated" and "prolonged" come up as synonyms, but both suggest something that should have ended by now.
The one thing to remember
"Maintained" is strongest when the number held under pressure. Name the pressure — a merger, a staff cut, a peak season — next to the number that didn't move.
Other words you might be repeating
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