Somewhat fat.

(mathematics) Having a unique solution whose value changes only slightly if initial conditions change slightly

Supported by a great deal of evidence. / (linguistics) Of words or languages, proven to exist through a large number of examples or copious records.

(rail transport, Britain) An open goods wagon with a well (depressed loadbed) between the bogies or axles.

plural of well wagon

plural of well boat (alternative form of well-boats)

Synonym of over hard

(intransitive) To preemptively raise ad hominem arguments in order to discredit someone. / Used other than figuratively or idiomatically: see poison, the, well.

simple past tense and past participle of well up

(category theory) Said of a category or topos: that it has a terminal object (or that it has no zero object, if it is a topos) and in which any distinct pair of parallel morphisms can be distinguished by their distinct compositions with a global element of their domain; i.e. any pair of parallel morphisms is distinct if and only if there is a global element in their domain that does not equalize them.