high–voltage

high–voltage /ˈhaɪˈvoʊltɪʤ/ adjective
high–voltage
/ˈhaɪˈvoʊltɪʤ/
adjective
Britannica Dictionary definition of HIGH–VOLTAGE
always used before a noun
1 
: having or using a very powerful flow of electricity
2 
[more high–voltage; most high–voltage] : having or showing a lot of energy