From Longman Dictionary of Contemporary Englishcomercom‧er /ˈkʌmə $ -ər/ noun → all comers → latecomer, newcomer
Examples from the Corpus
comer• But some doctors have a history of abusing that trust for profit, prescribing unnecessary and ineffective diet regimes to all comers.• These two young artists have been picked by critics as genuine comers.• She can hold her own against all torch-bearing, sword-wielding comers, then woo the gods like Aphrodite. 