Synonyms of impassable

impassable 1 of 2

adjective (1)

(ˌ)im-ˈpa-sə-bəl 

variants also impassible

as in dense

impossible to get through or into

the road was impassable until snowplows cleared it

Synonyms & Similar Words

• dense
• close
• impervious
• impenetrable
• impermeable
• impregnable
• frozen
• thick
• sturdy
• compressed
• compact
• tight
• substantial
• tough
• solid
• rigid
• hard
• condensed
• inflexible
• stiff
• unyielding
• firm
• unbending

Antonyms & Near Antonyms

• permeable
• passable
• negotiable
• soft
• penetrable
• elastic
• flexible
• giving
• malleable
• porous
• pliable
• yielding
• squishy
• absorbent
• bendable

impassible

2 of 2

adjective (2)

(ˌ)im-ˈpa-sə-bəl 

as in stoic

not feeling or showing emotion

years of living behind bars had rendered him impassible

Synonyms & Similar Words

• stoic
• impassive
• calm
• numb
• passionless
• bland
• emotionless
• enigmatic
• phlegmatic
• stolid
• unemotional
• apathetic
• detached
• undemonstrative
• empty
• affectless
• dry
• collected
• unmoved
• composed
• cold-blooded
• reserved
• cold
• imperturbable
• blank
• unflappable
• wooden
• dispassionate
• vacant
• cool
• inscrutable
• impenetrable
• expressionless
• inexpressive
• taciturn
• aloof
• unresponsive
• unconcerned
• pitiless
• objective
• impersonal
• deadpan
• indifferent
• inconsiderate
• thoughtless
• unsentimental
• stone-faced
• bloodless
• insensible
• reticent
• unfeeling
• hard-hearted
• straight-faced

Antonyms & Near Antonyms

• emotional
• impassioned
• passionate
• vehement
• fervent
• demonstrative
• fervid
• passional
• fiery
• burning
• enthusiastic
• zealous
• flaming
• ardent
• red-hot
• blazing
• dramatic
• mushy
• glowing
• sentimental
• sympathetic
• mawkish
• gung ho
• hot-blooded
• responsive
• melodramatic
• compassionate
• reactive
• warm-blooded
• sensitive
• histrionic
• perfervid
• maudlin
• gushing
• overheated
• overemotional

Example Sentences

Recent Examples of impassable

Adjective

The critical shipping passage has been largely impassable since the conflict began more than a month ago. —Sarah Min, CNBC, 3 Apr. 2026

This would, in a worst-case scenario, create an impassable debris field around Earth. —Big Think, 31 Mar. 2026

Adjective

This front will bring heavy snow to areas downwind of the Great Lakes, which could severely impact travel until Saturday and make some roads impassible. —Gavon Laessig, NBC news, 27 Nov. 2025

In Delaware and New Jersey, particularly the southern part of the state, coastal flooding could get bad enough to cause some roads to become impassible and some structures to flood, according to the National Weather Service in Mount Holly, New Jersey. —Mary Gilbert, CNN Money, 11 Oct. 2025