Explanation:

- Inimical: This word means something that is harmful or hostile, particularly towards someone or something. It often refers to environments or situations that are potentially damaging.

- Option 1: untidy: This word means messy or disorganized, typically referring to a place or appearance. It does not convey harm or hostility.

- Option 2: harmful: This word captures the essence of being damaging or injurious, aligning closely with the meaning of "inimical."

- Option 3: funny: This describes something amusing or entertaining. It is unrelated to harm or hostility.

- Option 4: trial: Typically refers to a formal examination of evidence in court, or it can mean an attempt or effort. It doesn’t align with "inimical."