eager beaver Antonyms

malingerer scaramouch seer shirker skiver slattern sleepyhead sloth slouch slubberdegullion slug slugabed sluggard smell-feast snail scapegrace scalawag saunterer marmot miller mopus observer parasitic passenger pig playgoer procrastinator quandong quitter ragpicker ringer runagate spalpeen spectatress spectatrix welcher welsher unambitious layabout slowcoach couch potato good-for-nothing ne'er-do-well slacker work-shy slob unmotivated bludger scrimshanker wastrel