Final answer:
In the given excerpt from 'Trifles,' the word similar to 'snooping' is 'intruding,' as both suggest unwelcome investigation into private affairs.
Step-by-step explanation:
In the context of the excerpt from Susan Glaspell's "Trifles," the word "snooping" suggests an intrusive and prying behavior. Therefore, the word with a meaning most similar to "snooping" as used in the excerpt is "intruding." This is because both "snooping" and "intruding" convey a sense of unwelcome or unauthorized investigation into someone else's space or affairs, which aligns with Mrs. Hale's discomfort about the men entering her kitchen and seeming to judge her domestic space.