1. An idle slothful person.
vadio (apache, bohemian, bummer, cadger, gadder, highbinder, hood, hoodlum, hooligan, landloper, landlouper, lazy, loafer, loon, lounger, peddlar, ranger, rowdy, ruffian, runabout, scourer, slothful, stroller, vagabond, vagrant, woodward), preguiçoso (chair warmer, dawdler, laggard, lazy, lazy guy, lie-a-bed, loafer, loller, lubberly, otiose, remiss, slack, slacker, slothful, sluggish, work-shy), mandrião (lazy, scalawag, scallywag, shirker, slothful, slouch, slug).
1. With little movement; very slow; "a sluggish stream".
2. (of business) not active or brisk; "business is dull (or slow)"; "a sluggish market".
3. Slow and apathetic; "she was fat and inert"; "a sluggish worker"; "a mind grown torpid in old age".
Ah, the usage of these words depends on context.