sustained

Something that's sustained is held or maintained for a long time, keeping its strength or level consistent and unbroken. A singer's sustained note goes on and on, and a judge's sustained ruling continues to be upheld.

The adjective sustained, which describes something that goes on uninterrupted for a long time, comes from the Latin word sustinere, "to hold up, support, or endure." Something sustained can be either good or bad: a sustained conflict is never good, but a sustained peace is something to be fought for.

Definitions of sustained
1

adj maintained at length without interruption or weakening

sustained flight”
Synonyms:
continuous, uninterrupted
continuing in time or space without interruption

adj (of an electric arc) continuous

Synonyms:
free burning
continuous, uninterrupted
continuing in time or space without interruption

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