mapless

As a noun taxonomy

is the science or the technique used to make a classification.

As an adjective mapless is

without a map or maps.

Mapless is a synonym of chartless.

As adjectives the difference between mapless and chartless

is that mapless is without a map or maps while chartless is without a chart or charts.

As a noun map

is a visual representation of an area, whether real or imaginary.

As a verb map

is to create a visual representation of a territory, etc. via cartography.

As an initialism MAP

is modified American plan, a hotel rate that included accommodation, breakfast and dinner, but not lunch.

As an adjective mapless is

without a map or maps.