intuitive (adj.)
1640s, "perceiving directly and immediately," from Middle French intuitif or directly from Medieval Latin intuitivus, from intuit-, past participle stem of Latin intueri "look at, consider," from in- "into" (from PIE root *en "in") + tueri "to look at, watch over," a word of uncertain origin. Meaning "self-evident" is from 1833. Related: Intuitively; intuitiveness.