You have your keywords that tells which keywords searchers are looking for when they search for your website and your product, however you may want some stimulation to add flavor and improve conversion. I have put together some words that I wish will inspire you.
Internet users don’t notice the identical things after they are repeatedly exposed to them many times. In Internet promotion banner blindness is the most well-known case. Internet users basically get used to banners that advertise something that is not worth their time, therefore they stop seeing the banners after some time. The similar thing happens with terminology that are used to make us do something.
Therefore, you need to vary your action terminology from time to time to keep them successful. The problem for most writers is that it is particularly difficult to vary the terminology because of old habit.
I have made this list of actions terminology to help you vary terminology from time to time to keep making your web copy effect full.
Here are some examples on how you can vary simplicity and use emotional word rather than rational words to sell more.

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

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 rational, linear, analytic, organized, critical side; the right hemisphere is the intuitive side, the realm of the imagination, emotional, creative.

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, bland and boring words. Here are a few examples:

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