"autopilot" in the noun sense
1. automatic pilot, autopilot
a cognitive state in which you act without self-awareness
"she went about her chores on automatic pilot"
"too much of the writing seems to have been done on automatic pilot"
"she talked and he dozed and my mind went on autopilot"
2. autopilot, automatic pilot, robot pilot
a navigational device that automatically keeps ships or planes or spacecraft on a steady course
Source: WordNet® (An amazing lexical database of English)
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