A Janus word is two-faced (de dos caras), that is, a word that has opposite meanings. Strange is it not? A little history: the word “Janus” comes from Roman mythology, referring to a god that could look forwards and backwards.
Are you confused? ¿Está confuso? Such words exist in Spanish too – lívido (que significa amoratado y furioso) and sancionar (que podría significar aprobar o castigar).
Here are some examples in English that you need to learn:
- Peruse: which can mean “read with care” (leer detenidamente) or browse (hojear).
- Dust: one can dust furniture (quitarle al polvo a los muebles) and one can “dust” (espolvorear) a cake, and one can “dust feet”: she dusted her feet with talcum powder (se echo talco en los pies).
- Inflammable: this can mean “liable to catch fire” (prender fuego) and “fire proof” (ignífugo o incombustible).
How do you know which meaning applies: the context (el contexto) and common sense (sentido común), as you must do in Spanish.
There are some others – for another day!