Chucklingly is an adverb that describes the action of laughing in a quiet and subtle manner. Synonyms for chucklingly include gigglingly, snickeringly, sniggeringly, and titteringly. Each of these words has a similar meaning to chucklingly, but may be more appropriate in certain contexts. Gigglingly implies a higher pitched and more uncontrollable laughter, while snickeringly and sniggeringly suggest a somewhat mocking or derisive undertone. Titteringly also suggests a quieter, subdued laughter, but with a slightly nervous or hesitant quality. Overall, the choice of synonym for chucklingly will depend on the specific context and intended tone of the writing.