painless

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
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    Antonyms:
    painful
    causing physical or psychological pain
    harmful
    causing or capable of causing harm
    inhumane
    lacking and 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
    traumatic
    psychologically painful;"few experiences are more traumatic than losing a child";
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  2. adjective
    requiring little hard work or exertion
    “a painless solution to the problem”
    Synonyms:
    easy
    posing no difficulty; requiring little effort
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