Is undesire a correct word

Answer 1

It is technically incorrect because it is unrecognized by dictionaries because it is uncommon; the rest of this article will attempt to explain why it is uncommon.

The construction lexically descends from "desire," whereas its (other) etymological parent "undesired" comes from "desired" - which in turn has "desire" as its parent. ("Undesirable" came about 400 years later than "undesired" and has the same part of speech.)

Grammatically, "undesired" is an adjective while "undesire" would be a verb. Parts of speech are normally modified by (if anything) adding suffixes rather than removing prefixes; following this convention, it might look like "undesirate," which lacks the appealing sound of the original.

But what would it mean which other words do not, or why would folks prefer it over its alternatives? (Keep in mind that most do not care much about any of these issues.) We already have "dislike" and varying intensities thereof.

The Online Etymology Dictionary (see related links) is a valuable reference for such quests.