invenio

Invenio, invenire, inveni, inventum, fourth conjugation, from in plus venio: "come upon". The perfect is the bare stem inveni, so watch the pairs closely - inveni is "I found", invenire "to find", inveniri "to be found", and invenimus and invenit are each both present and perfect with only the vowel length to separate them.

The three verbs of looking divide the work. Quaerere is the searching, reperire is finding as the result of searching, invenire is coming across a thing whether or not you were after it. The past participle turned into the noun inventum, "a discovery", and that is the branch English kept in invent, inventor and inventory, all of which have drifted well away from simply finding something.