同義詞
1. a continuous low humming sound
- hum
- , buzz
- , whir
- , whirring
- , vibration
- , murmur
- , murmuring
- , purr
- , purring
- , hiss
- , hissing
- , whisper
- , whispering
- , sigh
2. a person who does no useful work and lives off others
- hanger-on
- , parasite
- , leech
- , passenger
- , idler
- , loafer
- , layabout
- , lounger
- , good-for-nothing
- , do-nothing
- , sluggard
- , laggard
- , lazybones
- , scrounger
- , sponger
- , cadger
- , freeloader
- , bloodsucker
- , waster
- , skiver
- , slacker
