add a prefix
correct or wrong
meaning
negative
gaps
100

way

subway

100

estimate

underestimate/overestimate

100

unexpected

something that is surprising because you were not expecting it

100

comfortable

uncomfortable

100

I saw something strange in the sky, but it suddenly_______.

disappeared

200

national

international / multinational

200

misunderstand

Correct

200

post-war

happening or existing after a war, especially the Second World War

200

regular

irregular

200

The taxi _____charged me. (He asked for more money than normal)

overcharged

300

calculate

miscalculate / recalculate

300

disjudge

Wrong (misjudge)

300

sub-zero

below zero in temperature

300

convenient

inconvenient

300

Sorry. I ________ you. I thought you said "no".

misheard

400

active

interactive / hyperactive

400

inconvenient

Correct

400

supersonic

faster than the speed of sound

400

loyal

disloyal

400

This paragraph in your essay is unclear. I think you should _______ it.

rewrite

500

operate

cooperate

500

unobey

wrong (disobey)

500

illegible

difficult or impossible to read

500

practical

impractical

500

I completely _________ Alan. I thought he was selfish, but I see I was wrong.

misjudged