dagīdag
For someone (agent muɴ-; s agent maN-) to scratch the back (loc ref -an) with a suitable instrument (theme i-).
panagīdag; managīdag
To use some instrument (inst paN-) for scratching the back, as described above.
For someone (agent muɴ-; s agent mangi-) to rub the back (theme i-) against something, as a post (loc ref -an) to relieve itching.