intervene

1 ENTRIES FOUND:
intervene /ˌɪntɚˈviːn/ verb
intervenes; intervened; intervening
intervene
/ˌɪntɚˈviːn/
verb
intervenes; intervened; intervening
Britannica Dictionary definition of INTERVENE
[no object]
1 
: to come or occur between two times or events
2 
: to become involved in something (such as a conflict) in order to have an influence on what happens
— often + in
3 
: to happen as an unrelated event that causes a delay or problem

— intervening

adjective, always used before another noun

— intervention

/ˌɪntɚˈvɛnʃən/ noun, plural interventions
[noncount]
[count]