Week 6 (February 11): Word-formation (prefixes and suffixes)

Your encyclopedia articles had been due on Friday 14th, though I've just extended this deadline until Monday 17th (6pm).
Pick one of the following prefixes or suffixes, and explain how it has been most “productive” in Early Modern and/or Present-Day English. The OED has entries for affixes, and I’ve also put Marchand’s Categories and types of present-day English wordformation on reserve (PE 1175 M3). You might consider:

• how the affix came in (if it wasn't already native)
• what part(s) of speech it attaches itself to, and what part(s) of speech it forms.
• whether it attaches to bases of native and/or of Romance (Latin, French) origin.
• whether it likes to combine with other affixes (e.g., unhappiness)
• whether it competes with other affixes (e.g. -ness vs -ity?)
• whether the words it forms come from specific registers of English (e.g., science)
• whether the words it forms have particular connotations (would you want to be an - ist) or an -eer?