persist
Concise Oxford English Dictionary © 2008 Oxford University Press:
persist/pəˈsɪst/
▶verb
- 1 continue firmly or obstinately in an opinion or a course of action in spite of difficulty or opposition.
- 2 continue to exist.
– origin C16: from L. persistere, from per- ‘through, steadfastly’ + sistere ‘to stand’.
'persist' also found in these Oxford entries:

