Allowlists

Part of speech: noun

Definitions

1. A list or database that specifies entities granted permission to access or use certain privileges
2. A record detailing individuals or items that are authorized within a particular system or context
3. A compilation of approved users or applications that are permitted for operation in a technology or security framework

Etymology: "Allowlists" is simply the plural of "allowlist," a compound formed from the verb "allow" and the noun "list." The pairing is transparent: an allowlist is a list of things that are permitted, as opposed to a blocklist, which names things to be refused. The term belongs to the vocabulary of computing and network security, where software filters, firewalls, and access systems check requests against a stored list of approved addresses, users, or programs. The plural form follows ordinary English practice for nouns ending in a consonant sound, taking "-s" without any change to the spelling. Each part of the compound keeps its everyday meaning, so the word needs little explanation beyond its two components.

Synonyms: whitelists, approved lists, safe lists

Antonyms: blocklists, blacklists