Synonyms that are in the dictionary are marked in green. Synonyms that are not in the dictionary are marked in red.
Antonyms that are in the dictionary are marked in green. Antonyms that are not in the dictionary are marked in red.
The world's first under-river tunnel - the Thames Tunnel - opened in January 1843 and was built by an engineer called Sir Marc Brunel and his son Isambard to allow cargo to be transported underneath the busy river.
Source: https://www.bbc.co.uk/news/world-asia-india-65773871?at_medium=RSS&at_campaign=KARANGA