verb vərb/
noun                                      GRAMMAR
noun: verb; plural noun:                  verbs
1.
a word used to describe
an action, state,
or occurrence,            and                         forming        the               main                                
                            ­   part
of the predicate of a sentence,
such as hear, become,                       happen.
verb
verb: verb;             3rd person present:                       verbs;                              past tense:
verbed;                     past participle:               verbed;
gerund or present participle:                                                      ­  verbing
1.
use (a word that is not conventionally
used as a verb, typically a noun) as a              verb.
"any English noun can be verbed,
                                   but some are more resistant than others"
Origin: late Middle English: from Old French verbe
or Latin verbum ‘word, verb.’verb:                                                      ­                   ob·sess əbˈses/verb
                                         obsess; 3rd person present:               obsesses;
past tense: obsessed; past participle:                                         obsessed;
gerund or present participle:                                      obsessing
preocc­upy or fill the mind of (someone)
continually, intrusively,                         and             to   a   troubling      
        extent.
      "he was obsessed                           with the theme          of                      
  death"
synonyms: preoccupy,                be uppermost
in someone's mind, prey                                   on someone's mind,
on,          possess,           haunt,              consume,                          plague,
torment, hound, bedevil, beset, take                                      control of,
control, take over, have a hold on, rule,
eat up,                                                              ­   have a grip on, grip
"being thin is obsessing her"
be fixated on/upon,                                             be preoccupied with,
be possessed by, be consumed with/by                               (thoughts of),
                                     an obsession with;
be infatuated with,                                        be besotted with,
be smitten with;
informal: have a thing about/for,                                            be hung up
about/on, have it bad for
                              "he was obsessed with his roommate's sister"
(of a person) be preoccupied with or
                                                           constantly
worrying about something.
"her husband,                     who is obsessing about the                                  wrong she has  
                        done him"
Origin: late Middle English                                                     (in the sense
                                        ‘haunt, possess,’
referring to an evil spirit):                                               from Latin obsess-
‘besieged,’ from the verb obsidere, from ob-
opposite’         +                sedere ‘sit.’                                                     The current sense dates
from the late 19th century.