You have your keyword list that says which search phrases searchers are looking for when they search for your home page or your products, nevertheless you may need some stimulation to add flavor and improve conversion. I have put together some words that I wish will inspire you.
People don't see the same things after they are constantly exposed to them time and again. In Internet promotion banner blindness is the most celebrated example. People simply get used to banners that advertise something that is not worth their time, therefore they stop seeing the banners after a while. The same thing happens with terms that are used to make us do something.
Hence, you must vary your action terms now and then to keep them successful. The problem for most writers is that it is awfully not easy to vary the terms because of old habit.
I have made this list of actions terms to help you vary terms now and then to keep making your web copy effect full.
Here are a few examples on how you can vary simplicity and use emotional word rather than rational words to sell more.

Indicating Simplicity:
minimal, smooth, usual, safe and simple, precise, with both feet on the ground, straightforward, clear-cut, unproblematic, explicit, down to earth, uncomplicated, unambiguous, unadorned, undemanding, definite, normal, effortless, unembellished, plain and simple, unequivocal, clear, unfussy, unpretentious, without ornamentation, minimum, straight-thinking, ordinary, simple to, trouble-free, clean, natural, unsophisticated, sticking to the facts.

Indicating of Rational vs. Emotional: You might have heard the concept of right-brain and left-brain functions: The left hemisphere of the brain is the analytic, organized, linear, critical side; the right hemisphere is the emotional, creative, intuitive side.

Most people buy on emotion, the more you appeal to the right side of the brain, the more you'll sell. You do this by using emotional words, not intellectual, rational and boring words. Here are a few examples:

Left Brain vs. Right Brain: nude vs. naked, preserve vs. save, diminutive vs. small, jesting vs. joking, observed vs. seen, anticipate vs. expect, utilize vs. use, demise vs. death, fatigued vs. tired, strike vs. hit, aid vs. help, inform vs. tell, astute vs. smart, concerned vs. worried, superior vs. better, purchase vs. buy, wealthy vs. rich, famished vs. hungry, disclose vs. reveal/explain, immediately vs. right now, terminate vs. end, accelerate vs. speed up, intelligent vs. bright, gratification vs. enjoyment, accolade vs. applause, notion vs. idea, propitious vs. favorable, huge vs. giant, soiled vs. dirty, additionally vs. here's more/there's more, obstinate vs. stubborn, humorous vs. funny, pleased vs. happy, sufficient vs. enough, attractive vs. good looking, fearful vs. afraid, youthful vs. young, allow vs. let, omit vs. leave out, elderly vs. old, stomach vs. belly, perhaps vs. maybe, reply vs. answer, tardy vs. late, requested vs. ask for, perceive vs. see, learn vs. find out, receive vs. get, challenge vs. dare, at an end vs. over, facilitate vs. ease, circular vs. round, avid vs. eager, select vs. pick/choose, futile vs. hopeless, beneficial vs. good for, hasten vs. hurry, difficult vs. tough/hard, ill vs. sick, following is/are vs. here's/here are, courageous vs. brave, completed vs. finished, subsequent to vs. since, combat vs. fight, concerning vs. about, tidings vs. news, I regret vs. I'm sorry, construct vs. build, prevent vs. stop.