Weekly SAT Vocab Quiz: Prefix Power (multi-, ob-, omni-, post-, pre-, pred-)
This week’s vocabulary set is all about prefixes—the building blocks that come before a word and give it power. We’re focusing on some high-frequency SAT prefixes:
- Ob- = toward or against (e.g., obtrusive, obscure)
- Omni- = all (e.g., omnipotent, omniscient)
- Post- = after (e.g., posterity, posthumous)
- Pre- = before (e.g., precedent, predecessor)
- Pred- = before or ahead (e.g., predict, predetermine)
- Multi- = many (e.g., multiplicity, multifaceted)
Knowing these roots will help you decode unfamiliar words on the test—even if you’ve never seen them before.
Your job:
- Match each word to its definition
- Identify how the prefix influences the meaning
- Apply your understanding with SAT-style multiple-choice questions
Let’s build that root-word recognition and level up your verbal instincts.
Section 1: Match Words with Definitions
Click on a word, then click on its matching definition
Matching Score: 0/8
Having unlimited power; all-powerful
Obtrusive
A large number of diverse elements
Posterity
Omniscient
Noticeable in an unwelcome way
Posthumous
An earlier example that serves as a guide
Having complete knowledge; all-knowing
Multiplicity
Future generations; descendants
Precedent
Omnipotent
Occurring after someone's death
Predecessor
One who came before; former holder
Section 2: Match Prefixes with Meanings
Connect each prefix to its correct definition
Prefix Score: 0/6
Prefixes
MULTI-
multimedia, multitask, multicultural
OB-
obstacle, obvious, obstruct
OMNI-
omnivore, omnibus, omnipresent
POST-
postpone, postwar, postgraduate
PRE-
preview, prehistoric, prevent
PRED-
predator, predict, predispose
Meanings
before, in advance
many, multiple
after, behind
against, toward, in the way
before, in front of
all, every
Section 3: SAT-Style Context Questions
Choose the word that best completes each passage
Multiple Choice Score: 0/8
Weekly Quiz Completion Report
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