Underground: alternatives and connections

Covered over; private; hid; secret; disguised.

Open English WordNet links these adjective senses as similar in meaning; they are not necessarily interchangeable.

Covered over; private; hid; secret; disguised.

Open English WordNet links these adjective senses as similar in meaning; they are not necessarily interchangeable.

Alt. of Railway

Open English WordNet identifies the related term as a broader lexical category for at least one sense.

A road or way consisting of one or more parallel series of iron or steel rails, patterned and adjusted to be tracks for the wheels of vehicles, and s…

Open English WordNet identifies the related term as a broader lexical category for at least one sense.

The act of resisting; opposition, passive or active.

Open English WordNet records a derivational relationship between these word forms.

The act of resisting; opposition, passive or active.

Open English WordNet records a derivational relationship between these word forms.

Conducted with secrecy; withdrawn from public notice, usually for an evil purpose; kept secret; hidden; private; underhand; as, a clandestine marriag…

Open English WordNet places these words in at least one shared synset. They share a lexicalised sense, but context, register and collocation should still be checked before substitution.

Privacy; secrecy. Commonly in the phrase in hugger-mugger, with haste and secrecy.

Open English WordNet places these words in at least one shared synset. They share a lexicalised sense, but context, register and collocation should still be checked before substitution.

The act of resisting; opposition, passive or active.

Open English WordNet places these words in at least one shared synset. They share a lexicalised sense, but context, register and collocation should still be checked before substitution.

Hidden; concealed; as, secret treasure; secret plans; a secret vow.

Open English WordNet places these words in at least one shared synset. They share a lexicalised sense, but context, register and collocation should still be checked before substitution.

An underground way or gallery; especially, a passage under a street, in which water mains, gas mains, telegraph wires, etc., are conducted.

Open English WordNet places these words in at least one shared synset. They share a lexicalised sense, but context, register and collocation should still be checked before substitution.

Done or made by stealth, or without proper authority; made or introduced fraudulently; clandestine; stealthy; as, a surreptitious passage in an old m…

Open English WordNet places these words in at least one shared synset. They share a lexicalised sense, but context, register and collocation should still be checked before substitution.

A hollow cylinder, of any material, used for the conveyance of fluids, and for various other purposes; a pipe.

Open English WordNet places these words in at least one shared synset. They share a lexicalised sense, but context, register and collocation should still be checked before substitution.