Where does “negative lookaround” come from?

negative lookaround (English) comes from English lookaround, from English around, from Middle English arounde, from Middle English round, from Old French reont, from Latin retundus, from Latin rotundus, from Latin rotō — to run.

negative lookaround (English): The analysis of the characters' absence before the regular expression is matched

Definitions

  1. The analysis of the characters' absence before the regular expression is matched

Ancestry of “negative lookaround”, step by step

negative lookaround traces back through two separate lines of ancestry.

via English lookaround

StepLanguageWordMeaning
1EnglishlookaroundCollective term for lookahead and lookbehind
2EnglisharoundDefining a circle or closed curve containing a...
3Middle Englisharoundeabout the margin, along the periphery
4Middle Englishroundcircle, round
5Old Frenchreontround
6Latinretundusround
7Latinrotundusround, circular; spherical, rotund; rounded,...
8Latinrotōto turn, trend, wheel, roll, swing about, whirl, rotate; brandish
9LatinRotaan ecclesiastical appellate court in the Catholic...
10Proto-Italicrotā
11Proto-Indo-EuropeanHróth₂-eh₂
12Proto-Indo-EuropeanHreth₂-to run

via English negative

StepLanguageWordMeaning
1EnglishnegativeNot positive nor neutral; Of electrical charge of...
2Middle Englishnegative
3Old Frenchnegatif
4Latinnegativusdenied, negative, that which denies; inhibiting
5Latinnegōto deny
6Latinnecnor; and not, not; neither
7Latinnequenot; and not, also not
8Proto-Indo-Europeannekʷeand not, neither, nor
9Proto-Indo-Europeannenot
Every word from Proto-Indo-European Hreth₂-Every word from Proto-Indo-European Hróth₂-eh₂Every word from Proto-Italic rotā