1. With reference to the origin or beginning
   - primitively, originally 
2. Before now
   - in the first place, earlier, to begin with, originally

Encyclopedia: In the beginning

• impudicity
• impugn
• impugnable
• impugner
• impuissance
• impuissant
• impulse
• impulse explosive
• impulse turbine
• impulse-buy
• impulsion
• impulsive
• impulsively
• impulsiveness
• impunity
• impure
• impurely
• impureness
• impurity
• imputable
• imputation
• impute
• imputrescible
• IMU
• Imuran