nonconstant
adjective
non·con·stant ˌnän-ˈkän(t)-stənt 
: not constant
nonconstant acceleration
especially : having a range that includes more than one value
a nonconstant mathematical function
nonconstantly adverb
Word History
First Known Use
1854, in the meaning defined above
- five-em space
- five-figure
- five-finger
- five-fingered creeper
- five-fingered ivy
- five-fingered Jack
- five-fingered root
- five-flowered gentian
- five-hole
- five-leaf
- five-leaved chaste tree
- five-leaved ivy
- five-leaved pine
- five-lined lizard
- five-o'clock shadow
- five-percenter
- five-shooter
- five-sisters
- five-spice powder
- five-spot
- five-star
- five-star rank
- five-ten limits
- five-toed jerboa
- five-year cure