act of extending good wishes to someone else

present participle of well-wish

A well in which a stainless steel tube is bored directly down into an aquifer

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

(mathematics) The condition of being well-posed

Somewhat fat.

(archaic) A greeting.

(archaic) Welcome, greeted. / Greeted by a person of high respect or social status. / Used other than figuratively or idiomatically: see well, met.

(idiomatic) Efficient; efficiently run. / (idiomatic) Drunk.

Of comparable strength or power. / Suitable to be in a relationship with one another.