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

Ice and snow covered roadways will become treacherous and impassable. —Nc Weather Bot, Charlotte Observer, 24 Jan. 2026

Local officials and weather forecasters have urged Texans to stay off roads this weekend unless absolutely necessary, as ice and snow may make some roads impassable. —Lauren Caruba, Dallas Morning News, 23 Jan. 2026

Adjective

The storm left 1,467 roads impassible, NCDOT said, cutting off several communities from the outside world. —Luciana Perez Uribe Guinassi, Charlotte Observer, 22 Sep. 2025

There are concerns that parts of the main highway could be washed out, leaving some routes impassible for days. —John Seewer, Chicago Tribune, 19 Aug. 2025