परिपन्थिन्paripanthina.Standing in the way, obstructing, opposing, hindering (said by Pānini to be admissible only in the Veda, but…
तयोर्न वशमागच्छेत्तौ ह्यस्य परिपन्थिनौ ॥
कोशःDictionaries
V. S. Apte, The Practical Sanskrit–English Dictionary. Look up any word of the Gita in Devanagari, IAST or Harvard-Kyoto, or browse the headwords letter by letter.