What does crossable mean?
'Crossable' is an adjective describing something — most often a natural or constructed barrier such as a river, stream, canal, road, or frontier — that can be crossed or traversed. The word carries a practical, matter-of-fact connotation: it signals not merely that a crossing is theoretically possible, but that it can realistically be accomplished under prevailing conditions, whether on foot, by vehicle, or by another means. It is especially common in geographical surveys, military assessments, travel writing, and engineering reports, where determining whether an obstacle is crossable has real strategic or logistical consequences. Related terms such as 'passable' and 'traversable' overlap in meaning, but 'crossable' specifically emphasises movement from one side of a barrier to the other. Its opposite, 'impassable', describes features that cannot be crossed at all. Though not among English's most frequently used adjectives, it serves a precise and useful role wherever boundaries and barriers must be described.
adjectiveAble to be crossed; capable of being traversed or gone across, as a river, road, or border that can be negotiated on foot or by vehicle.
- (of a physical feature such as a river, stream, road, or border) able to be crossed or traversed
"The river was low enough in late summer to be safely crossable."
"At dawn, the shallow ford was finally crossable on horseback."
"Officials confirmed the mountain pass would remain crossable throughout the summer months."
Every 'crossable' bridge or river is a small victory of geography over engineering — the moment a barrier becomes a pathway.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of crossable
'Crossable' is formed from the verb 'cross' combined with the adjectival suffix '-able', which derives ultimately from Latin '-abilis' via Old French. The root word 'cross' itself comes from Old Norse 'kross', borrowed into medieval English through Irish, ultimately tracing back to Latin 'crux', meaning a stake or gallows and later specifically the Christian cross. The suffix '-able' denotes capability or fitness, so 'crossable' literally means 'fit to be crossed'. It belongs to the large productive family of English verbs made adjectival by this suffix, alongside words such as 'passable' and 'readable'.
How crossable is actually used
'Crossable' is a neutral, descriptive term most often found in geographical, military, travel, and engineering contexts. It typically appears predicatively ('the river is crossable') rather than attributively ('a crossable river'), though both are valid.
Easily confused with crossable
'Crossable' specifically means able to be crossed (as over a barrier like a river), while 'passable' more generally means able to be passed through or along, such as a road being clear of obstruction.