from the POD...
god n. 1 a (in many religions) superhuman being or spirit worshipped as having power over nature, human fortunes, etc. b image, idol, etc., symbolizing a god. 2 (God) (in Christian and other monotheistic religions) creator and ruler of the universe. 3 adored or greatly admired person. 4 (in pl.) Theatr. gallery. God forbid may it not happen! God knows 1 it is beyond all knowledge. 2 I call God to witness that. God willing if Providence allows. [Old English]
Nothing about any gender in there. Godess
IS gender specific, God is not.
lord —n. 1 master or ruler. 2 hist. feudal superior, esp. of a manor. 3 peer of the realm or person with the title Lord. 4 (Lord) (often prec. by the) God or Christ. 5 (Lord) a prefixed as the designation of a marquis, earl, viscount, or baron, or (to the Christian name) of the younger son of a duke or marquis. b (the Lords) = *House of Lords. —int. (Lord, good Lord, etc.) expressing surprise, dismay, etc. lord it over domineer. [Old English, = bread-keeper: related to *loaf1, *ward]
Only the last definition is gender specific here. And master is also non specific here.
As for Sivar, well, as mentioned before, Kilrathi warriors seem to be almost exclusively male. If there were female warriors throughout Kilrathi history surely they'd still be around unless. Unless they dishonoured themselves somehow in the past. How comparable are Kilrathi with Klingons anyway
Here's a question, what's the ratio of male:female Kilrathi? Is it possible that the cats are primarily male and females are so few that they cannot be risked in battle?