ingenious (adj.)
- acute
- adept
- adroit
- apt
- arch
- artful
- artistic
- astute
- authoritative
- bright
- brilliant
- cagey
- canny
- clean
- clever
- conceptive
- conceptual
- coordinated
- crack
- crafty
- creative
- cunning
- cute
- daedal
- deceitful
- deep
- deep-laid
- deft
- designing
- dexterous
- dextrous
- diplomatic
- excellent
- expert
- fancy
- fecund
- feline
- fertile
- foxy
- germinal
- gifted
- good
- goodish
- graceful
- guileful
- handy
- ideational
- imaginative
- innovational
- innovative
- insidious
- inspired
- inventive
- keen
- knowing
- magisterial
- masterful
- masterly
- neat
- notional
- original
- originative
- pawky
- politic
- pregnant
- productive
- professional
- proficient
- prolific
- quick
- ready
- resourceful
- scheming
- seminal
- serpentine
- shaping
- sharp
- shifty
- shrewd
- skilled
- skillful
- slick
- slim
- slippery
- sly
- smart
- smooth
- snaky
- sneaky
- some
- sophistical
- statesmanlike
- stealthy
- strategic
- stylish
- subtle
- supple
- tactful
- tactical
- talented
- teeming
- tricksy
- tricky
- virtuoso
- visioned
- vulpine
- wary
- well-done
- wily
- workmanlike