с глазу на глаз
I don't think глазу is genitive here. Is глазу́ locative and stressed on the last syllable, although с usually takes the genitive?
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2 Answers
It actually is the genitive, and the stress is on the first syllable:
- с гла́зу на́ глаз
The genitive ending -у is retained in quite a few set expressions such as:
- бе́з толку, и́з лесу, не зна́я бро́ду не су́йся в во́ду
Stressed prepositions and particles are also signs of a well-established expression or just a frequently-used collocation:
- бе́з году неде́ля, встать на́ ноги, взять за́ руку, не́ за что, etc.
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what about "ни в одном глазу"? - I believe it might be locative– shabunc ♦Commented Nov 16, 2018 at 9:31
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@shabunc, yes, in "ни в одном глазу" and "на голубом глазу" the "глазу" is in locative as indicated by the stress: глазу́. Also, the prepositions в/на only govern prepositional/locative and accusative. Commented Nov 16, 2018 at 11:02
It is ablative case, a subcase of Genitive. It differs from Genitive in ending and from Partitive and Locative in stress: the stress falls on the preposition if it has a vowel.
и́з лесу, и́з виду, и́з глазу, бе́з толку.
When there is no vowel, the stress fall to the noun: с миру.
The other answer is wrong: the word бро́ду in the examples is actually in Partitive, not Ablative.
