Serious or subdued in demeanor, habit, appearance, or color; solemn; grave; sedate.

dignified and somber in manner or character and committed to keeping promises; "a grave God-fearing man"; "a quiet sedate nature"; "as sober as a judge"; "a solemn promise"; "the judge was solemn as he pronounced sentence"

lacking brightness or color; dull; "drab faded curtains"; "sober Puritan gray"; "children in somber brown clothes"

Temperate in the use of spirituous liquors; habitually temperate; as, a sober man.

Not intoxicated or excited by spirituous liquors; as, the sot may at times be sober.

become sober after excessive alcohol consumption; "Keep him in bed until he sobers up"

Not mad or insane; not wild, visionary, or heated with passion; exercising cool, dispassionate reason; self-controlled; self-possessed.

Not proceeding from, or attended with, passion; calm; as, sober judgment; a man in his sober senses.

In cryptography, SOBER is a family of stream ciphers initially designed by Greg Rose of QUALCOMM Australia starting in 1997. The name is a contrived acronym for Seventeen Octet Byte Enabled Register. Initially the cipher was intended as a replacement for broken ciphers in cellular telephony.

an email worm, sending messages in English and German, sometimes posing as a fix from an Anti-Virus company

The Sober worm is a family of computer worms that was discovered on October 24, 2003. Like many worms, Sober sends itself as an e-mail attachment.

"Sober" is a song on Tool's first full-length album, Undertow.

Separate Operation for Billing Entitlement and Remittance

become more realistic; "After thinking about the potential consequences of his plan, he sobered up"

cause to become sober; "A sobering thought"

To become sober; -- often with down.

To make sober.