stalkerishadj.
/ˈstɔːkərɪʃ/, U.S. /ˈstɔkərɪʃ/, /ˈstɑkərɪʃ/ colloquial.
Characteristic of or resembling a stalker (stalker n. Additions); displaying an obsessive, inappropriate, or unwelcome interest in someone.
ΚΠ
1996 N.Y. Mag. 22 July 52/2 The masseuse's journal is..poignantly hyperliterary, annoyingly New Age, and eerily stalkerish.
2000 Melody Maker 25 Oct. 70/1 We did a gig in Staffordshire and this guy was backstage who was a bit stalker-ish.
2007 Granville (Ohio) Sentinel 20 Dec. 5 b/1 Florentino's romantic notions can verge on creepy and faintly stalkerish.
2010 Vanity Fair Mar. 201/2 Goodkin said he was also struck by the ‘stalkerish’ aspect of the crimes.
2013 L. Miller Parallel vi. 171 No more stalkerish staring... No more asking him out. If there's gonna be a next move, it'll have to come from him.
This is a new entry (OED Third Edition, September 2016; most recently modified version published online March 2022).
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adj.1996