The word 'chippering' refers to a sound that is usually made by birds. Antonyms for chippering could include quiet, still, silent, hushed or noiseless. If a bird is not chippering, it may be cooing, chirping or singing softly. These words are antonyms because they all describe sounds that are different from chippering. Other antonyms for chippering could include loud, boisterous, or cacophonous. It is interesting to note how the antonyms for a single word can provide a range of opposites, reflecting a variety of tones and moods.