φείδεσθαι
From LSJ
Πρόσεχε τῷ ὑποκειμένῳ ἢ τῇ ἐνεργείᾳ ἢ τῷ δόγματι ἢ τῷ σημαινομένῳ. → Look to the essence of a thing, whether it be a point of doctrine, of practice, or of interpretation.
Greek > English (Woodhouse Verbs Reversed)
(see also φείδομαι): spare, be grudging of, be sparing of, give quarter
Lexicon Thucydideum
parcere, to spare, be lenient, 1.82.4, 1.90.3, 3.59.1, 3.74.2, 4.11.4, 7.29.4, 8.45.6.