Inane (adjective)

1. Lacking sense or meaning; empty; senseless.
2. Lacking significance or importance; trivial.
3. Lacking intelligence or good sense.

Origin:

From the latin inanis (empty, vain), from in- (not) + anus (old), from an (year, age).

Examples:

1. The inane conversation made it difficult to focus on work.
2. The inane comments from the politician were not taken seriously.
3. The inane humor of the comedian fell flat.
4. The inane script of the movie was criticized for its lack of depth.
5. The inane argument was easily debunked.