lightweight (n.)
- baby
- bantam
- bantamweight
- block
- boxer
- breakable
- brittle
- bruiser
- button
- cheap-jack
- chicken
- chit
- cipher
- clod
- cog
- commonality
- commonalty
- creature
- crybaby
- dainty
- diminutive
- dimwit
- dolt
- donkey
- doormat
- dope
- dullard
- dumbbell
- dummy
- dunce
- featherweight
- fighter
- figurehead
- fingerling
- flimsy
- flunky
- flyweight
- follower
- frail
- gimcrack
- heavyweight
- inferior
- invertebrate
- jackstraw
- jellyfish
- jerry
- junior
- light
- loon
- masses
- mediocrity
- middleweight
- milksop
- mini
- minnow
- mollycoddle
- mouse
- namby-pamby
- nebbish
- nincompoop
- ninny
- nitwit
- no-account
- nonentity
- nubbin
- obscurity
- palooka
- pansy
- pantywaist
- pawn
- peewee
- pip-squeak
- pony
- prizefighter
- pug
- pugilist
- punk
- pushover
- put
- runt
- scrub
- secondary
- shrimp
- sissy
- slight
- slip
- snip
- snippet
- softy
- sop
- squirt
- squit
- stupid
- subaltern
- subordinate
- tit
- underling
- wart
- weak
- weakling
- welterweight
- whippersnapper
- wisp
- yes-man
lightweight (adj.)
- bantam
- block
- breakable
- brittle
- button
- chicken
- cobwebby
- crumbly
- dainty
- delicate
- diminutive
- dummy
- effeminate
- flimsy
- forceless
- fragile
- frail
- frangible
- gimcrack
- impotent
- ineffective
- ineffectual
- inefficacious
- inferior
- invertebrate
- jerry-built
- junior
- light
- mini
- namby-pamby
- no-account
- papery
- powerless
- punk
- puny
- put
- scrub
- secondary
- sissified
- sissy
- sleazy
- slight
- slip
- stupid
- subaltern
- subordinate
- tacky
- underweight
- unsubstantial
- wart
- weak
- weightless
- wispy
- womanish
