As a reminder:
true positive rate (TPR, a.k.a. hit rate, recall, specificity)
TPR = TP / P = TP / (TP + FN)
specificity (SPC) or true negative rate
SPC = TN / N = TN / (TN + FP)
true positive rate (TPR, a.k.a. hit rate, recall, specificity)
TPR = TP / P = TP / (TP + FN)
specificity (SPC) or true negative rate
SPC = TN / N = TN / (TN + FP)
"Sensitive" has a clearer intuition: For example when you want to detect a weak signal, then if your antenna is more sensitive, you can better pick up the signal, thus you are better at telling whether the signal is really there (you have a better true positive rate).
I cannot think of a better name for TNR, though, other than simply sticking with TNR and TPR.