"existing arguments" is grammatically correct and can be used in written English.
It refers to arguments that already exist or have been made previously. Example: The author conducted a thorough review of existing arguments on the topic before presenting his own perspective.
Presidential aides said that Mr. Bush chose to deliver the speech outside of Washington because his intention was to summarize his existing arguments, not create expectations of a declaration of war.
We develop a new technique which simplifies some of the existing arguments.
However, the directions of the effects are not necessarily in accord with the existing arguments.
Manipulation of existing arguments is also handled in ArgDF: users can attack or support parts of existing arguments, or use existing parts of an argument in the creation of new arguments.
In subsections 2.4.2 and 2.4.3 we will examine some existing arguments for and against the plain extensional adequacy of derivability and model-theoretic validity for Fregean languages.
In developing ideas about the overall value of biodiversity it has been natural to draw on existing arguments about values of individual species (for review, see World Conservation Union 1980; Norton 1988).
The smallest incident, it seems, is proof of an existing argument, one way or another.
Due to the dynamics of underlying theories, argument construction is not a monotonic process, which is different from the existing argumentation framework where arguments are constructed incrementally.
Also, we provide a theoretical justification for existing empirical arguments concerning the loss of control degrees of freedom caused by process intensification.
I shall lay out the existing consensus arguments for ignoring past receipt of medical resources when deciding about future use of such resources.
Roger Pielke, Jr., then reacts to Victor's comment (it's excerpted here, with a link to the full reaction set up as a standalone document): It is important to understand the degree to which the "we can do this with existing technology" argument has taken root in both U.S. and international politics.
