1. To make familiar by habit; to habituate.

2. To be wont. See Custom.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• accustome,
• acustum,
• accoustome,
• accostum,
• acostom,
• acustom,
• acoustome,
• ccustom,
• accsutom,
• acustome,
• accumstom,
• coustom,
• accostom,
• accustic,
• accustum,
• acoustom,
• cuustom,
• accustume,
• accoustom,
• acousto

• accused,
• acosta,
• accost,
• accusatory,
• accustomed,
• acoustic,
• acquisitive,
• acquisition.

The adverb form of "accustom" is "habitually" or "customarily".

The adjective form of the word "accustom" is "accustomed".

The plural form of the word "accustom" is "accustoms"

The singular form of the word "accustom" is "custom" which is also a standalone word with a slightly different meaning.