ἡ γὰρ σιωπὴ μαρτυρεῖ τὸ μὴ θέλειν → silence is evidence of unwillingness (Menander)
Of rivers, etc.: P. and V. πηγή, ἡ, κρήνη, ἡ, Ar. and V. κρουνός, ὁ.
origin: P. and V. ἀρχή, ἡ, πηγή, ἡ (Plato), ῥίζα, ἡ.
from what source, interrog.: P. and V. πόθεν; see whence.
from another source: P. and V. ἄλλοθεν.