non-irritant
adjective
(alsononirritant)uk/ˌnɒnˈɪr.ɪ.tənt/us/ˌnɑːnˈɪr.ə.t̬ənt/notcausingpainorsoreness:
Thesoapcontainsnaturalingredientsthat are non-toxic and non-irritant.
Unlike otherbrands, thislotioncontainsonly onetypeof nonirritantsunscreen.
- Thesoftsiliconecatheterissafeand nonirritant.
 - Amaterialisrequiredthat is non-toxic and non-irritant, haslowwaterabsorption, and does notsupportthegrowthof micro-organisms.
 - Thesprayisclearandalmostinvisible, non-irritant and doesn'tstickto theskin.
 - If youexpectaprolongedperiodof intubation postoperatively,selectasuitablenon-irritanttube.
 - Theseeyedropsare of a non-irritanttyperecommendedfor theprotectionof theeyesfrom apollutedenvironment.
 
Pain & painful
- -racked
 - agonizing
 - be murder onsomethingidiom
 - brain freeze
 - cluster headache
 - dull
 - dully
 - dysmenorrhea
 - excruciating
 - grief
 - groan
 - neuralgia
 - pang
 - rawness
 - sciatic
 - sharpness
 - soreness
 - sting
 - stitch
 - tingle