duire

A largely obsolete verb with two old senses: "to lead/guide" (from Latin ducere, the ancestor of conduire, produire, séduire, and dozens of other -duire verbs) and "to suit/please" (cela me duit), the latter still occasionally seen in literary or Norman regional French — even in its heyday it survived only in a handful of forms (il duit, ils duisent, il duisait, il duira, il duirait).

• Cela me duit tout à fait, disait-on autrefois pour cela me convient. — "That suits me perfectly," people used to say using this old form.
• Le verbe duire a donné naissance à conduire, produire et séduire, entre autres. — The verb duire gave rise to conduire, produire, and séduire, among others.
• Aujourd'hui, on ne l'emploie plus que dans quelques formes figées ou en Normandie. — Today it's only used in a few fixed forms or in Normandy.

Even in older French this verb was defective, missing most persons and tenses — modern French relies entirely on its many descendants (conduire, produire, séduire, traduire...) instead, so don't try to conjugate it broadly.