धातु रूप (Verb Conjugation) shows different forms of a verb based on लकार (tense/mood), पुरुष (person — प्रथम/मध्यम/उत्तम), and वचन (number). Sanskrit has 10 लकार: लट् (present), लृट् (future), लङ् (past imperfect), लोट् (imperative), विधिलिङ् (potential/optative), and 5 others used less frequently.

Key धातु conjugation — गम् (to go), लट् लकार (present tense, परस्मैपद): प्रथम पुरुष — गच्छति, गच्छतः, गच्छन्ति। मध्यम पुरुष — गच्छसि, गच्छथः, गच्छथ। उत्तम पुरुष — गच्छामि, गच्छावः, गच्छामः। पठ् (to read), लट्: पठति-पठतः-पठन्ति, पठसि-पठथः-पठथ, पठामि-पठावः-पठामः.

Important धातुs with meanings: गम् (go), पठ् (read), लिख् (write), खाद् (eat), पा/पिब् (drink), क्रीड् (play), हस् (laugh), रक्ष् (protect), दृश्/पश्य् (see), श्रु (hear), कृ (do), भू (be), अस् (be/exist), दा (give), नी (lead). The लट् लकार endings are most tested: -ति/-तः/-न्ति (प्रथम), -सि/-थः/-थ (मध्यम), -मि/-वः/-मः (उत्तम).

REET Exam Tips: Focus on लट् लकार conjugation pattern. Know the 9-form grid (3 persons × 3 numbers). Most common question: fill in the correct verb form, or match धातु with its conjugated form.