Which word signifies a state of being pointless or ineffective?

The term that signifies a state of being pointless or ineffective is "futile." This word is often used to describe efforts or actions that fail to achieve the desired result or are ultimately ineffectual, indicating that no matter how much effort is put in, the outcome will not change or improve. For example, trying to convince someone who is set in their beliefs may be seen as a futile endeavor, as it's unlikely to yield any positive results.

The other options convey positive outcomes or effective results. "Productive" refers to being efficient and yielding positive results. "Effective" signifies that something is capable of producing a desired effect, while "beneficial" implies that something is advantageous or favorable. Therefore, these terms do not align with the concept of being pointless or ineffective, as they all suggest some level of success or utility in actions or outcomes.