1. a violation of the rules in tennis or volleyball in which a player's foot crosses the baseline or service line during a serve
Usage: common in tennis and volleyball

1. to commit a footfault; to step over the line illegally while serving
Usage: used in tennis and volleyball contexts

Examples

• The tennis player was called for a footfault when her back foot crossed the baseline during her serve.
• He footfaulted twice in a row, losing two points on his service game.
• The referee spotted a footfault and awarded the point to the opposing team.
• In volleyball, a footfault occurs when the server steps on or over the end line.
• She was careful not to footfault after being warned by the umpire.
• The player's footfault cost her the match point.