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obsess

[uh b-ses] /əbˈsɛs/
verb (used with object)
1.
to dominate or preoccupy the thoughts, feelings, or desires of (a person); beset, trouble, or haunt persistently or abnormally:
Suspicion obsessed him.
verb (used without object)
2.
to think about something unceasingly or persistently; dwell obsessively upon something.
Origin
1495-1505
1495-1505; < Latin obsessus, past participle of obsidēre to occupy, frequent, besiege, equivalent to ob- ob- + -sid(ēre) combining form of sedēre to sit
Related forms
obsessingly, adverb
obsessor, noun
Can be confused
abscess, obsess.
Synonyms
1. possess, control, haunt.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples for obsesses
  • It delights and obsesses many of those who try it, making them addicts.
  • Management obsesses on what is measurable instead of promoting what is important.
British Dictionary definitions for obsesses

obsess

/əbˈsɛs/
verb
1.
(transitive; when passive, foll by with or by) to preoccupy completely; haunt
2.
(intransitive; usually foll by on or over) to worry neurotically or obsessively; brood
Word Origin
C16: from Latin obsessus besieged, past participle of obsidēre, from ob- in front of + sedēre to sit
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for obsesses
obsess
c.1500, "to besiege," from L. obsessus, pp. of obsidere "besiege, occupy," lit. "sit opposite to," from ob "against" + sedere "sit." Of evil spirits, "to haunt," is from 1530s.
Online Etymology Dictionary, © 2010 Douglas Harper
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