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

And because so many roads are impassable, damage assessment was only just beginning this evening after a devastating direct hit from Melissa. —Matt Nighswander, NBC news, 29 Oct. 2025

Apart from the brief cease-fire periods, the Israeli government also tightly controlled the internal movements of aid organizations within Gaza and frequently rejected movement requests or directed convoys through insecure or impassable areas. —Jeremy Konyndyk, Foreign Affairs, 23 Oct. 2025

Adjective

At numerous points in the climb, impassible conga lines form as the climbers navigate difficult sections. —Ben Ayers, Outside, 13 Aug. 2025

The northbound lane of Emerson Avenue remains impassible at East 10th Street, but the intersection isn't closed for cars heading south, east or west. —Ryan Murphy, IndyStar, 2 July 2025