How do you say friend in Hindi?
— दोस्त (m); मित्र (m)

Generic synonyms for friend in Hindi
personमनुष्य (m) (manuṣya); शख़्स़ (m) (śaxsa); (m) (śakhsa)जन (m) (jana); व्‌यक्‌ति (m) (vyakti); व्यक्ति (m) (vyakti)
soulआत्मा (f) (ātmā)
Specialized synonyms for friend in Hindi
brotherजीजा (jījā)
comradeकामरेड (kaamred); साथी (saathi)
girlfriendगर्लफ़्रेंड (f) (garlfreṇḍ); गर्लफ्रेंड (f) (garlfreṇḍ, garlphreṇḍ)
lightहलका (halkā)
Derivative terms for friend in Hindi
friendshipदोस्ती (f); मित्रता (f) (mitrtā)