painless

/ˈpeɪnlɪs/

/ˈpeɪnlɪs/

Anything that's painless doesn't hurt at all. A painless medical procedure (like having blood drawn) might be a little scary, but it's actually very easy.

Getting your teeth cleaned at the dentist should be a painless process, although getting a filling sometimes hurts a little bit. A painless math test is simple and requires very little work or thought on your part — this is a figurative way to use painless, obviously, since no one would expect a math test to cause you physical pain, even if it's not your strongest subject.

Definitions of painless

1. adjective

   not causing physical or psychological pain
   “painless dentistry”

   synonyms:

   harmless

   not causing or capable of causing harm

   pain-free, unpainful

   not accompanied by pain sensations

   antonyms:

   painful

   causing physical or psychological pain

   harmful

   causing or capable of causing harm

   inhumane

   reflecting lack of pity or compassion

   aching, achy

   causing a dull and steady pain

   agonised, agonized

   expressing pain or agony

   agonising, agonizing, excruciating, harrowing, torturesome, torturing, torturous

   extremely painful

   biting, bitter

   causing a sharply painful or stinging sensation; used especially of cold

   chafed, galled

   painful from having the skin abraded

   poignant

   keenly distressing to the mind or feelings

   itchy

   causing an irritating cutaneous sensation; being affect with an itch

   racking, wrenching

   causing great physical or mental suffering

   saddle-sore

   (of a rider) sore after riding a horse

   raw, sensitive, sore, tender

   hurting

   scalding, traumatic

   psychologically painful
2. adjective

   requiring little hard work or exertion
   “a painless solution to the problem”

   synonyms:

   easy

   posing no difficulty; requiring little effort