inventive (adj.)
- abecedarian
- aboriginal
- acute
- antenatal
- arch
- artful
- astute
- autochthonous
- beginning
- budding
- cagey
- canny
- causative
- clever
- conceptive
- conceptual
- constructive
- crafty
- creative
- cunning
- cute
- deceitful
- deep
- deep-laid
- designing
- diplomatic
- elemental
- elementary
- embryonic
- fecund
- feline
- fertile
- fetal
- formative
- foxy
- fruitful
- fundamental
- generative
- germinal
- guileful
- ideational
- imaginative
- inaugural
- inceptive
- inchoate
- inchoative
- incipient
- infantile
- ingenious
- initial
- initiative
- initiatory
- innovational
- innovative
- insidious
- inspired
- introductory
- knowing
- nascent
- natal
- notional
- original
- originative
- parturient
- pawky
- politic
- postnatal
- pregnant
- prenatal
- primal
- primary
- prime
- primeval
- primitive
- procreative
- productive
- prolific
- ready
- resourceful
- rudimentary
- scheming
- seminal
- serpentine
- shaping
- sharp
- shifty
- shrewd
- slick
- slippery
- sly
- smooth
- snaky
- sneaky
- sophistical
- stealthy
- strategic
- subtle
- supple
- tactical
- teeming
- tricksy
- tricky
- ur
- visioned
- vulpine
- wary
- wily