Greek and Latin Prefixes: O and P

Another prefix post brought to you by the letters “O” and “P.” (As per Greek and Latin Roots, there aren’t any Greek- or Latin-derived prefixes in English beginning with “N,” so we’re skipping ahead a bit here.)

Prefixes are morphemes that you can attach to word stems. (You can browse that link for previous posts on classically derived word stems.) Generally speaking, prefix changes word meaning, not word function.

Here are previous entries in this series on prefixes:

Prefix Meaning Example
ob* up against, in the way obstruct
para aside, apart paramedic, paranormal
per through, thorough; wrongly permeate, persecute
peri around perimeter
poly many polytheism
post after postpone
pre before precedent
pro forward, ahead, for promotion, provoke

*”Ob” tends to change form arbitrarily. (This is probably not arbitrary; there are probably linguistic or phonological reasons some changes happen or some don’t. But it can seem arbitrary.) “Ob” is still connected to words like “oppose” or “offend.”

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