"futile" comes to mind first; "useless" means much the same thing.
Results
If you repeat the experiment and you get different results, then the accuracy of your first trial is not correct.
Comprehend
deteriorating
Receiving, becoming (depending on how you are using the word "getting").
Are you talking about outcomes? Because I do not think that there is any particular word!
I've had results with this site: http://translation2.paralink.com
The word striptis is not a real word recognized by any dictionary, therefore does not have a meaning. The only search results that include the word striptis are from YouTube.
The word "escarpment" has a similar meaning to rock faces and cliffs. It refers to a steep slope or long cliff that results from erosion or faulting.
getting all you can eat for very little money.
The word sought may be "accuracy" (getting precise results). The closest word to this spelling is "accursed" (cursed, damned).
Getting meaning from context means: Looking at the words around an unfamiliar word to help determine meaning. Sometimes, if you read the entire paragraph that contains the unfamiliar word, you can figure out what the word means.