Synonyms of the word

painless

• adj. Free from pain; without pain or trouble.
• adj. Not difficult; easy.

easy

• adj. (now rare except in certain expressions) Comfortable; at ease.
• adj. Requiring little skill or effort.
• adj. Causing ease; giving comfort, or freedom from care or labour.
• adj. Free from constraint, harshness, or formality; unconstrained; smooth.
• adj. (informal, pejorative, of a person) Consenting readily to sex.
• adj. Not making resistance or showing unwillingness; tractable; yielding; compliant.
• adj. (finance, dated) Not straitened as to money matters; opposed to tight.
• adv. In a relaxed or casual manner.
• adv. In a manner without strictness or harshness.
• adv. Used an intensifier for large magnitudes.
• adv. Not difficult, not hard.
• n. Something that is easy.
• v. (rowing) Synonym of easy-oar.

harmless

• adj. Incapable of causing harm or danger.
• adj. Not intended to harm; inoffensive.
• adj. Safe.

pain-free

• adj. without pain, free of pain.

unpainful

• adj. Not painful.