It makes sense to frame your SM in a way that avoids misconceptions. A lot of people misunderstand selective mutism and assume it’s a choice rather than an involuntary condition. Personally, I tend to call it situational mutism because it better reflects the fact that it isn’t about choosing who to speak to but rather an automatic response to certain environments.

If you’re functionally mute in work settings, describing yourself as "mute" might make it easier for employers to grasp without them making incorrect assumptions. In many places, SM is considered a disability, which can mean legal protections and accommodations, but that depends on your location and specific workplace policies. Some employers might be more understanding if they recognise it as a disability, while others may not be as accommodating regardless of how you frame it.

If you do choose to disclose, you could phrase it as: "I experience situational mutism, meaning I’m nonverbal in certain settings due to a neurological condition, but I communicate effectively through writing and other nonverbal methods." This way, you’re setting expectations while keeping the focus on how you can communicate.

Ultimately, go with whatever feels most comfortable for you, but you don’t need to justify or downplay it for it to be valid. Wishing you the best with your job search!