simple
having few parts; not complex or complicated or involved
elemental
of or being the essential or basic part
evident
clearly revealed to the mind or the senses or judgment
apparent
clearly revealed to the mind or the senses or judgment
literal
limited to the explicit meaning of a word or text
patently
unmistakably (`plain' is often used informally for `plainly')
patent of invention
a document granting an inventor sole rights to an invention
assure
inform positively and with certainty and confidence
guarantee
an unconditional commitment that something will happen or that something is true
invulnerable
immune to attack; impregnable
assured
marked by assurance; exhibiting confidence
strong
having strength or power greater than average or expected
easy
posing no difficulty; requiring little effort
effortless
requiring or apparently requiring no effort
simplified
made easy or uncomplicated
supreme
greatest in status or authority or power
