By defintion, a tunnel is underground.
The one word synonym for "underground passageway" is "tunnel".
Subway
Yes, the noun 'tunnel' is a common noun, a general word for any underground passage.The word tunnel is also a verb: tunnel, tunnels, tunneling, tunneled.
Yes, the noun 'tunnel' is a common noun, a general word for any underground passage.The word tunnel is also a verb: tunnel, tunnels, tunneling, tunneled.
There is no underground tunnel.
Yes, the noun 'tunnel' is a common noun, a general word for any underground passage.The word tunnel is also a verb: tunnel, tunnels, tunneling, tunneled.
Burrow.
it is an adjective because it is describing something.ex. the tunnel is underground-it describes where the tunnel is :)
No, the noun 'tunnel' is a concretenoun, a word for an underground passage made by humans or animals, a word for a physical thing.The word 'tunnel' is also a verb: tunnel, tunnels, tunneling, tunneled.
oasis
Sea
Burrow