1. Travelling on horseback
   - ahorseback

1. On the back of a horse
   "managed to escape ahorse"
   - horseback, ahorseback

See also: moving

• professionally
• professor
• professorial
• professorially
• professoriate
• professorship
• proffer
• proficiency
• proficient
• proficiently
• profile
• profiler
• profiling
• profit
• profit and loss
• profit and loss account
• profit margin
• profit sharing
• profit taker
• profit-and-loss statement
• profit-maximising
• profit-maximizing
• profitability
• profitable
• profitableness