οἷος

determiner

1. relative adjective of quality such as; what sort, manner, kind of
2. what a (great, terrible) ...!
3. the (great, terrible) sort that
4. containing a comparison, and sometimes an inference
5. in many Homeric expressions the omission of the antecedent clause is to be noticed
6. especially in Attic often stands for ὅτι τοῖος/τοία/τοῖον (hóti toîos/toía/toîon), so that the relative introduces the reason for the preceding statement
7. if it is to be intimated that the reason is self-evident, and the assertion is beyond doubt, then δή (dḗ) is added
8. but if the comparison or inference only denotes a general or doubtful resemblance, then Homer uses οἷός τε (hoîós te)
9. when a comparison involves a definition of time οἷος ὅτε (hoîos hóte) is used
10. many brief Attic expressions are also explained by the omission of the demonstrative pronoun before οἷος (hoîos)
11. never used like the adverb οἷον (hoîon) with a positive adjective
12. οἷος (hoîos) with an infinitive implies fitness or ability in or for a thing
13. but this sense is commonly expressed by οἷος τε (hoîos te)
14. the relative is in Attic often repeated in the same clause