a mano
ES [a ˈmano] · Spanish for “by hand” · mano = hand, from Latin manus
In Spanish, a mano means by hand - the opposite of automatic. It was only after a few moments that this wire made the connection to English manual. The connection is strengthened with Czech as well, since manually, or a mano is translated to ručně in Czech, which stems from the word for an arm / hand - ruka. Not a shared word root, but the outcome is well aligned.
Spanish mano is hand, straight from Latin manus - and that manus is hiding in plain sight all over English. Manual and manually just mean “by hand,” which is exactly what a mano says out loud. Follow the root and it keeps paying out: a manuscript is something written by hand, manufacture was once making things by hand, and to manipulate is to work something with the hands. So a mano isn't really a phrase to memorise - it's a key that opens a whole drawer of English words you already know.