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。

• innocence
• innocent
• innocuity
• innocuous
• innominate
• innovate
• innovation
• innovative
• innovator
• innuendo
• innumerable
• inoculate
• inoffensive
• inoperable
• inoperative
• inopportune
• inordinate
• inorganic
• inpatient
• input
• inquest
• inquire
• inquiry
• inquisition
• inquisitive