7: Spelling Rules for Suffixes Last updated Jul 21, 2020 Save as PDF 6.16: The Suffix -ment 7.1: The Rule of Simple Addition Page ID712 ( \newcommand{\kernel}{\mathrm{null}\,}\) 7.1: The Rule of Simple Addition7.2: The Twinning or Doubling Rule7.3: The Final (e) Deletion Rule7.4: Replacing Letters and the (y)-to-(i) Rule7.5: The Doubling or Twinning Rule in Longer Words