veteran

(noun) a serviceman who has seen considerable active service. Synonyms: veteran soldier. Example: "The veterans laughed at the new recruits."

(noun) a person who has served in the armed forces. Synonyms: vet, ex-serviceman.

(noun) an experienced person who has been through many battles; someone who has given long service. Synonyms: old-timer, oldtimer, old hand, warhorse, old stager, stager.

(adj) rendered competent through trial and experience. Synonyms: seasoned, veteran(prenominal). Examples: "A seasoned traveler." "Veteran steadiness." "A veteran officer."