rudiment：雏形，萌芽，基本原理，基础

rude,原始的，-ment,名词后缀。引申诸相关词义。

• propellant
• propeller
• propensity
• proper
• property
• prophecy
• prophesy
• prophet
• incivility
• inclement
• inclination
• incline
• include
• inclusion
• inclusive
• incognito
• incognizable
• incoherent
• income
• incomer
• incommensurate
• incommode
• incommunicado
• incommutable
• incomparable