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Related to bases: Acids and Bases
cover (one's) bases
To ensure one's safety or success by dealing with every potentially problematic aspect of a situation or activity. A reference to baseball, in which the defensive players must make sure all bases (and baserunners who may occupy them) are accounted for. Primarily heard in US, South Africa. We have to be sure to cover our bases before the trial begins so that we aren't surprised by anything the prosecution throws our way.
cover all bases
To be well-prepared for every possible outcome. We need to cover all bases here—check every office and make sure it's been evacuated. I know I don't have the best grades, so I covered all bases by applying to 15 colleges.
To found or root something on a particular idea or occurrence. A noun can be used between "base" and "on" or "upon." My love of science is based upon an interest in experimentation. Unfortunately, she has a low opinion of me. I think she based it on our first meeting, which didn't go well.
See also: base
cover all the bases
To account for or provide a way to address every possible outcome, scenario, contingency, etc. We need to cover all the bases here—the investigation should explore every avenue. I covered all the bases by applying to 15 colleges.
touch all the basesor
touch all bases
If someone or something touches all the bases or touches all bases, they deal with or include all the different things that they should. His speech was short but he touched all the bases. The simple menu touches all bases: meat, fish, poultry and pasta. Note: You can also say that someone or something covers all the bases or covers all bases. The boss covers all bases when he sets up a job. Note: In baseball, batters have to touch the first, second, and third bases to score a run.