The more left-wing faction of a group or party.
The left-hand side of a sports field.
The offensive player who plays to the center's left.
An extremist, especially an ultranationalist.
An especially devoted football fan, typically associated with the intimidating use of extremist slogans, pyrotechnics and sometimes hooligan violence.
An ultra-prominent peak.
Code name used by British codebreakers during World War 2 for decrypted information gained from the enemy.
An ultraroyalist in France.
An ultramarathon.
Extreme; far beyond the norm; fanatical; uncompromising.