Synonyms for serious change

Synonyms for serious

severe (grievous, weighty, solemn >>)
grave (heavy, good, earnest >>)
dangerous
sober
hazardous

See all synonyms for serious

Synonyms for change

modify (alter, vary, revise >>)
shift (transformation, transition, reversal >>)
modification (alteration, revision, amendment >>)
variation (difference, fluctuation, oscillation >>)
switch
transform
exchange
replacement

See all synonyms for change