occur
- v come to pass
Nothing occurred that seemed important - v come to one's mind; suggest itself
It occurred to me that we should hire another secretary - v to be found to exist
sexism occurs in many workplaces
precious stones occur in a large area in Brazil
observe
- v discover or determine the existence, presence, or fact of
- v make mention of
She observed that his presentation took up too much time - v observe with care or pay close attention to
- v watch attentively
Please observe the reaction of these two chemicals - v show respect towards
- v behave as expected during of holidays or rites
- v follow with the eyes or the mind
- v stick to correctly or closely
- v conform one's action or practice to
obsess
- n a major river of western Siberia; flows generally northward and westward to the Gulf of Ob and the Kara Sea
- n the branch of medicine dealing with childbirth and care of the mother
- v haunt like a ghost; pursue
- v be preoccupied with something
She is obsessing over her weight
obsolesce
- v become obsolete, fall into disuse
This word has not obsolesced, although it is rarely used
obstruct
- v hinder or prevent the progress or accomplishment of
- v block passage through
obstruct the path - v shut out from view or get in the way so as to hide from sight
The trees obstruct my view of the mountains
obtain
- v come into possession of
How did you obtain the visa? - v receive a specified treatment (abstract)
- v be valid, applicable, or true