We don't have synonyms for all hollow yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are allhallow.
(phrase) :
he was beat all hollow, i.e. he had no chance of conquering: it was all hollow, or a hollow thing, it was a decided thing from the beginning. (1811 Dictionary of Vulgar Tongue)
(phrase) :
he was beat all hollow, i.e. he had no chance of conquering: it was all hollow, or a hollow thing, it was a decided thing from the beginning. (1811 Dictionary of Vulgar Tongue)