Get variable names from results of lm()

What is the best way to get the variable names used in lm() from its
results?

Stumbling around I found I could get the response variable name from

myMod$terms[[2]]

but using 

myMod$terms[[1 ]]

gives a tilda.

I found the names buried in other places in the model object and in the
summary of the model, but is there a more direct way, similar to using
coef(myMod) to get the coefficients?


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