English
light out
Phrasal verb from light (“to get down, drop, come”, verb) + out (“away from”, adverb).
Formed from light ‘to get down, drop, come’ + out ‘away from’
Proto-Indo-European *lewk- ‘to shine’
…
Proto-Germanic *leuhtą
Proto-West Germanic *leuht ‘light’
Old English lēoht
Middle English light ‘light, illumination’
English light
Proto-Indo-European *úd ‘upwards, away’
Proto-Germanic *ūt ‘out’
Proto-West Germanic *ūt ‘out’
Old English ūt ‘out’
Middle English out
English out
Today it means
verb To go away or depart, especially in haste or without notice.
Language periods are conventional ranges, not dates for this word.
Etymograph / light out