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.
Natural gas itself is odorless, but an additive called mercaptan gives it a pungent, sulfuric smell that aids in leak detection.
‘Nicor told us it was just residual mercaptan in the ground.