If something is persistent, it just won't stop. If you're persistent in your suggestions for a trip to Mexico, maybe your parents will eventually give in and take you there.

Persistent comes from the Latin verb persistere which means "to continue with strength." A persistent salesman refuses to give up. A persistent ringing sound is one that repeats and repeats. Persistent rumors keep circulating, as does a persistent virus. Often something persistent is annoying. The related verb is persist, which means to continue to exist, or to go without stopping.

Definitions of persistent
  1. adjective
    stubbornly unyielding
    synonyms: dogged, dour, pertinacious, tenacious, unyielding
    obstinate, stubborn, unregenerate
    tenaciously unwilling or marked by tenacious unwillingness to yield
  2. adjective
    synonyms: relentless, unrelenting
    occurring without interruption; chiefly restricted to what recurs regularly or frequently in a prolonged and closely spaced series
  3. adjective
    continually recurring to the mind
    synonyms: haunting
    impossible to forget
  4. adjective
    retained; not shed
    persistent leaves remain attached past maturity”
    “the persistent gills of fishes”
    synonyms: lasting
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    caducous, shed
    shed at an early stage of development
    (of teeth, antlers, etc.) being shed at the end of a period of growth
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