New answers tagged negia
"Although it is clear enough that Jewish men should not touch women for reasons of niddah" This is not entirely exact. For the husband this is the reason, and nidda as a prohibition punished by Karet, not as a uncleanness. But a married wife married with an other man, despite that she is not nidda is prohibited because Eshet Ish. See Sefer Hachinuch ...
How about "For reasons of modesty I don't shake hands with the opposite gender- it's lovely to make your acquaintance / see you." It's the truth and it's to the point.
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