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Synonyms for heavy duty
adj large, great

huge
enormous
full
immense
tremendous
hefty
fat
colossal
sizable
substantial
massive
gigantic
considerable

vast
ample
brimming
bulky
bull
burly
capacious
chock-full
commodious
copious
crowded
extensive
hulking

humongous
husky
jumbo
mammoth
monster
packed
ponderous
prodigious
roomy
spacious
strapping
stuffed
voluminous

whopper
whopping
awash
heavyweight
walloping
a whale of a
heavy-duty
mondo
oversize
super colossal
thundering

Antonyms for heavy duty

miniature
teeny
tiny
insignificant
unimportant
impoverished
inconsiderable
blah
adolescent
baby

babyish
infantile
juvenile
selfish
ungenerous
little
minute
small
slight
thin

poor
bland
dull
infant
ungiving
humble
shy
unconfident
itsy

Synonyms
adj important

leading
powerful
valuable
substantial
significant
popular
serious

main
considerable
big league
consequential
eminent
influential
major league

material
meaningful
momentous
paramount
prime
principal
prominent

super
weighty
big-time
heavyweight
heavy-duty
super colossal

Antonyms

subordinate
unimportant
insignificant
minor
trivial
tiny
blah
adolescent

baby
babyish
infantile
juvenile
selfish
ungenerous
little
small

bland
dull
infant
ungiving
humble
shy
unconfident
itsy

Synonyms
adj healthy, powerful

firm
heavy
vigorous
secure
tough
capable
solid
big
forceful
able
steady
tenacious

athletic
substantial
stable
active
robust
durable
energetic
able-bodied
enduring
fixed
forcible
hale

hardy
hearty
mighty
muscular
reinforced
rugged
sinewy
sound
stalwart
stark
staunch
stout

strapping
sturdy
unyielding
well-founded
well-made
hard as nails
heavy-duty
in fine feather
well-built

Antonyms

unstable
indefinite
insignificant
unimportant
idle
impotent
inactive
lethargic
fragile
vulnerable
wobbly
unable
intermittent
undependable
untrustworthy
feeble
ineffective

infirm
lazy
sluggish
complacent
irresolute
laid-back
uncaring
indistinct
vague
pale
loose
slack
soft
weak
yielding
moving
little

small
easy
unfixed
delicate
inept
broken
unhealthy
agreeable
easy-going
obscure
mild
moderate
low
unpowerful
mistakable

Synonyms
adj big

huge
large
sizable
substantial
massive
extensive
ample
awash
brimming
bulky
bull
burly
capacious
chock-full

colossal
commodious
considerable
copious
crowded
enormous
fat
full
gigantic
good
great
healthy
heavyweight
hefty

hulking
humongous
husky
immense
jumbo
mammoth
monster
packed
ponderous
prodigious
roomy
spacious
strapping
stuffed

tremendous
vast
voluminous
walloping
whopper
whopping
a whale of a
heavy-duty
mondo
oversize
super colossal
thundering

Antonyms

miniature
tiny

little
small

short

Synonyms
adj strong

able
able-bodied
active
athletic
big
capable
durable
enduring
energetic
firm
fixed
forceful

forcible
hale
hardy
hearty
heavy
mighty
muscular
potent
powerful
reinforced
robust
rugged

secure
sinewy
solid
sound
stable
stalwart
stark
staunch
steady
stout
strapping
sturdy

substantial
tenacious
tough
unyielding
vigorous
well-founded
well-made
hard as nails
heavy-duty
in fine feather
well-built