földalatti

Adjective

 * 1) underground, clandestine, illicit

Usage notes
According to, this term is written as one word only if it is used in a meaning different from the original, literal sense, such as becoming a noun (as ’subway’, the vehicle, see below) or in the meaning ’illicit’. In the literal sense of ’underground’ (subterranean), it is written as two separate words. Nevertheless, its spelling is sometimes mistaken even by native speakers.

Noun

 * 1) metro, underground, Tube, subway  (underground railway)

Usage notes
As far as Budapest metro is concerned, földalatti specifically refers to the historical, relatively small Metro Line M1, and the other lines are referred to as. For the other suburban (underground and overground) railway lines, partially integrated into the metro system, see.