Synonyms of robust

robust

adjective

rō-ˈbəst 

1

as in healthy

enjoying health and vigor

a robust and sturdy toddler

Synonyms & Similar Words

• healthy
• sturdy
• well
• strong
• whole
• wholesome
• fit
• hale
• sound
• hearty
• thriving
• tough
• in shape
• agile
• bouncing
• able-bodied
• well-conditioned
• rugged
• hardy
• vigorous
• lively
• active
• in the pink
• good
• in fine fettle
• stalwart
• hard
• lusty
• iron
• vital
• ambulatory
• sprightly
• prospering
• flourishing
• clean-cut
• nondisabled
• chipper
• uncrippled
• spry
• flush
• right
• blooming
• all right
• sprightful

Antonyms & Near Antonyms

• weak
• feeble
• sick
• unhealthy
• unfit
• unsound
• ill
• diseased
• weakly
• weakened
• sickly
• fragile
• unwell
• ailing
• disabled
• infirm
• enfeebled
• decrepit
• delicate
• frail
• debilitated
• incapacitated
• sickened
• troubled
• gaunt
• poorly
• bad
• differently abled
• undernourished
• worn-out
• run-down
• haggard
• malnourished
• emaciated
• afflicted

2

as in energetic

having active strength of body or mind

a robust older man who still bicycles 10 miles a day

Synonyms & Similar Words

• energetic
• dynamic
• vigorous
• powerful
• lively
• strong
• healthy
• vital
• capable
• tough
• lusty
• sturdy
• mighty
• spirited
• fit
• peppy
• athletic
• hale
• flush
• red-blooded
• muscular
• rugged
• brisk
• animated
• vivacious
• kinetic
• sprightly
• gingery
• hardy
• stout
• beefy
• energized
• sound
• virile
• fortified
• punchy
• competent
• burly
• vitalized
• rejuvenated
• firm
• invigorated
• refreshed
• dashing
• enlivened
• stalwart
• brawny
• husky
• hearty
• puissant
• robustious
• revitalized
• mettlesome
• strapping
• able-bodied

Antonyms & Near Antonyms

• weak
• sluggish
• feeble
• dull
• delicate
• faint
• lethargic
• listless
• frail
• torpid
• weakened
• infirm
• soft
• impotent
• powerless
• wan
• tired
• effete
• lazy
• languid
• indolent
• lackadaisical
• prostrate
• wimpy
• enervated
• unhealthy
• ill
• invertebrate
• unsound
• spineless
• nerveless
• disabled
• sapped
• wasted
• unwell
• decrepit
• debilitated
• prostrated
• broken-down
• worn-out

3

as in rich

having an abundance of some characteristic quality (as flavor)

beef and other red meats should be accompanied by robust wines

Synonyms & Similar Words

• rich
• strong
• potent
• concentrated
• big
• muscular
• full
• plush
• heady
• full-bodied
• lusty
• heavy
• undiluted
• fortified
• unmixed
• enriched
• straight
• high-octane
• high-test

Antonyms & Near Antonyms

• weak
• thin
• mild
• light
• delicate
• weakened
• thinned
• dilute
• diluted
• watery
• watered-down

4

as in strong

not showing weakness or uncertainty

a robust slap on the back welcoming me to the company

Synonyms & Similar Words

• strong
• sturdy
• solid
• vigorous
• firm
• powerful
• stout
• forceful
• tough
• iron
• hearty
• lusty
• mighty
• hard
• lively
• brisk
• ironclad
• energetic
• unyielding
• confident
• spirited
• vivacious
• sprightly
• vital
• perky
• secure
• animated
• frisky
• jazzy
• springy
• jaunty
• peppy
• certain
• assured
• sure
• sanguine
• zippy
• sprightful

Antonyms & Near Antonyms

• weak
• uncertain
• feeble
• fragile
• frail
• limp
• listless
• spiritless
• insecure
• diffident
• wimpy
• weakened
• spineless
• characterless
• effete
• self-doubting
• wishy-washy
• weak-kneed

Synonym Chooser

How is the word robust distinct from other similar adjectives?

Some common synonyms of robust are hale, healthy, sound, well, and wholesome. While all these words mean "enjoying or indicative of good health," robust implies the opposite of all that is delicate or sickly.

a lively, robust little boy

When would hale be a good substitute for robust?

Although the words hale and robust have much in common, hale applies particularly to robustness in old age.

still hale at the age of eighty

When can healthy be used instead of robust?

The meanings of healthy and robust largely overlap; however, healthy implies full strength and vigor as well as freedom from signs of disease.

a healthy family

When is sound a more appropriate choice than robust?

The words sound and robust are synonyms, but do differ in nuance. Specifically, sound emphasizes the absence of disease, weakness, or malfunction.

a sound heart

When is it sensible to use well instead of robust?

In some situations, the words well and robust are roughly equivalent. However, well implies merely freedom from disease or illness.

she has never been a well person

When might wholesome be a better fit than robust?

The words wholesome and robust can be used in similar contexts, but wholesome implies appearance and behavior indicating soundness and balance.

a face with a wholesome glow

Example Sentences

Recent Examples of robust

Abu Dhabi’s climate finance fund ALTÉRRA is investing to meet long-term energy demand and has a robust pipeline of potential deals, CEO Majid Al-Suwaidi said at Semafor World Economy in Washington, DC. —Kelsey Warner, semafor.com, 20 Apr. 2026

Training a robust manipulation model requires millions of high-quality trajectories. —Ni Tao, Interesting Engineering, 20 Apr. 2026

Nonetheless, the Padres are a robust business that is stronger than any of those three teams. —Justin Birnbaum, Sportico.com, 20 Apr. 2026

Submarines are a particular focus, prompting a robust response from frontline NATO states, primarily Norway, the UK and — for now, at least — the US. —Alan Crawford, Bloomberg, 20 Apr. 2026