There are a variety of synonyms for the word ACTW, which is an acronym that stands for "About to Chuckle With." Depending on the context, some suitable alternatives may include "laughing out loud," "cracking up," "finding something amusing," or "chortling." Other choices could involve expressions like "smiling broadly," "giggling," "snickering," "grinning ear to ear," or "bursting out in hysterics." These words and phrases are often used to denote a sense of happiness, joy, or pleasure, and they can help to convey the nature of a humorous situation or conversation. In general, the choice of synonym may depend on the tone and style of the speaker or writer, as well as the particular context in which the word is used.