ticklish (adj.)
- abstruse
- allergic
- anaphylactic
- arduous
- awkward
- brutal
- capricious
- changeable
- complex
- critical
- dangerous
- delicate
- demanding
- desultory
- difficult
- empathetic
- empathic
- exacting
- fickle
- formidable
- fragile
- goosy
- hairy
- hard
- hard-fought
- hazardous
- high-strung
- hypersensitive
- infirm
- insecure
- insubstantial
- intricate
- irritable
- itchy
- knotted
- knotty
- laborious
- mean
- mercurial
- nervous
- operose
- overrefined
- oversensitive
- perilous
- precarious
- prickly
- provisional
- refined
- responsive
- rigorous
- risky
- rocky
- rough
- rugged
- sensitive
- severe
- shaky
- shifting
- shifty
- skittish
- slippery
- slippy
- spiny
- steep
- strenuous
- supersensitive
- sympathetic
- tactful
- temperamental
- temporary
- tender
- tentative
- tetchy
- thin-skinned
- thorny
- tickling
- toilsome
- touch-and-go
- touchy
- tough
- treacherous
- tricky
- uncertain
- undependable
- unreliable
- unsettled
- unsound
- unstable
- unsteady
- unsubstantial
- unsure
- untrustworthy
- uphill
- variable
- volatile
- wicked