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guide: P. and V. ἡγεμών, ὁ, or ἡ, P. ἀγωγός, ὁ; see guide.
chief: P. and V. ἡγεμών, ὁ, or ἡ, προστάτης, ὁ; see chief.
ringleader: P. and V. ἡγεμών, ὁ, or ἡ.