communicable

The word communicable describes something that can be transmitted or passed on—most commonly referring to diseases but extending beyond the realm of health. At its heart, "communicable" comes from the verb "to communicate," meaning to share or convey information.

When we talk about a communicable disease, like measles or the common cold, it means the illness can spread from one person to another through various means—coughing, touching contaminated surfaces, and more. Public health officials often track communicable diseases to prevent outbreaks and protect communities.

However, communicable isn't limited to illnesses! An idea, a feeling, or even a habit can be communicable. If someone has a contagious laugh, you might say their joy is highly communicable. A skill learned in a workshop could be considered communicable if it can be taught to and learned by others.

Historically, the term was used more broadly to describe anything that could be imparted—knowledge, skills, or even qualities. While less common in everyday conversation today, this broader meaning still hints at the core idea: something communicable is capable of being shared and received.