Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun diver

3 senses of diver

Sense 1
diver, frogman, underwater diver -- (someone who works underwater)
       => explorer, adventurer -- (someone who travels into little known regions (especially for some scientific purpose))

Sense 2
diver, plunger -- (someone who dives (into water))
       => swimmer -- (a trained athlete who participates in swimming meets; "he was an Olympic swimmer")

Sense 3
loon, diver -- (large somewhat primitive fish-eating diving bird of the northern hemisphere having webbed feet placed far back; related to the grebes)
       => gaviiform seabird -- (seabirds of the order Gaviiformes)