untreadable

Impossible to walk

Untreadable describes a surface that cannot be safely or easily walked upon.

A rotting floor might be untreadable, as might terrain too steep, slippery, or unstable to traverse: The trail became untreadable after the mudslide.

The word is rare, appearing mostly in descriptions of damaged structures or impassable ground.

illegible

indecipherable

Impossible to understand

blurred · faint · smeared · blotted · erased · faded · illegible · messy · jumbled · muddled

incomprehensible

impenetrable

Impossible to pass through

arcane · esoteric · opaque · dense · convoluted · obscure · cryptic · enigmatic · baffling · perplexing

encrypted

coded

Converted to symbols

scrambled · secret · hidden · veiled · concealed · locked · protected · classified · redacted · censored

Opposites
walkability/traversability

untreadabletreadable

Able to be walked

walkable · passable · traversable · navigable · accessible

accessibility for passage

untreadablepassable

Minimally sufficient quality

open · clear · unobstructed · accessible · penetrable

Family

tread, treadable, treads, treading, trod, trodden, retread, retreads, retreading

Familiarity
Top 1,000,000
Profile
Used worldwide · Timeless · Everyday, not technical · Rated G