Latin intrīcātus, past participle of intrīcāre to entangle, perplex, embarrass; in- prefix + trīcae trifles, toys, quirks, tricks, perplexities, trīcārīto raise difficulties, play tricks.
- perplexingly entangled or involved; interwinding in a complicated manner.
According to this definition, almost anyone could fit into that category. Elizabeth probably meant it to mean something more along the lines of “interesting and intelligent”, which would explain why Darcy then says that the country does not have an abundance of such people. Based on stereotypes, Darcy could mean that countryfolk do not offer interesting and intelligent personalities.