easy

(noun): Something that is easy
(adjective): Comfortable; at ease.
(adjective): Requiring little skill or effort.
(adjective): Causing ease; giving comfort, or freedom from care or labour.
(adjective): Free from constraint, harshness, or formality; unconstrained; smooth.
(adjective): (of a woman) Consenting readily to sex.
(adjective): Not making resistance or showing unwillingness; tractable; yielding; compliant.
(adjective): Not straitened as to money matters; opposed to tight.
(adverb): In a relaxed or casual manner.
(adverb): In a manner without strictness or harshness.
(adverb): Used an intensifier for large magnitudes.
(adverb): Not difficult, not hard.
(verb): To stop rowing.

Now that I know it's taken care of, I can rest easy at night.
It's often easy to wake up but hard to get up.
Rich people live in easy circumstances.
easy manners; an easy style
She has a reputation for being easy; they say she slept with half the senior class.