tenilo

A handle is a holding-tool, and the word says so. Take teni, to hold, learned at rank 351. Add -il-, the suffix that names the instrument you perform an action with. Tenilo: the thing by which you hold. English has a handle for a door, a grip for a racquet, a haft for an axe, a hilt for a sword and a knob for a drawer, and a learner has to memorise all five. Esperanto has one word, and it is transparent from the first time you meet it.

The -il- family is one of the most useful things in the language. Every verb you know is a potential tool: tranĉilo a knife from tranĉi to cut, kudrilo a needle from kudri to sew, ŝlosilo a key from ŝlosi to lock, flugilo a wing from flugi to fly, skribilo a pen from skribi to write. The generic ilo, tool, at rank 736, is the same suffix standing on its own as a root - which is how Esperanto treats most of its affixes. One rank earlier in this band, manĝilaro stacks -il- with -ar- to make the cutlery drawer.

Where you actually meet it. A door handle is pordotenilo or just la tenilo de la pordo; a suitcase, a saucepan, a spade and a hammer all have one. When you take hold of something by its handle, the preposition is je, the indefinite one: preni je la tenilo. And note the gap with English: a tenilo is always a part of an object, so the figurative senses do not travel. You cannot get a handle on a problem in Esperanto, and nobody's social-media tenilo is their username.

One neighbour worth knowing. Anso is a separate root for the loop kind of handle - the ear of a jug, the bow of a basket, the part you hook a finger through rather than grip in a fist. It is uncommon, and outside a description of pottery you will not need it. Tenilo is the word to know, and it is built out of two things you already knew.