1. past tense and past participle of speed; moved or traveled quickly
Usage: less common than ‘sped’ as past tense
2. caused something to move or happen more quickly
Usage: often used with ‘up’

Examples

• The car speeded down the highway.
• She speeded through her homework to watch TV.
• The new software speeded up the computer.
• They speeded the process by hiring more workers.
• The train speeded past the station without stopping.
• He speeded up his walking pace to catch the bus.