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.
There are also online resources which can help – such as Nesta’s Money Saving Boiler Challenge, for example.
Source: https://metro.co.uk/2023/09/23/easy-boiler-trick-lower-energy-bill-winter-19543809/