Powerful Prefixes Flashcards
il-
means “not”
use if the base word starts with L
e.g. not legal = illegal
im-
means “not”
use if the base word starts with m or p
e.g. not mobile = immobile, not proper = improper
ir-
means “not”
use if the base word starts with r.
e.g. not relevant = irrelevant
in-
means “not”
use if the base word starts with any letter other than l, m, p, or r.
e.g. not adequate = inadequate
anti-
means against or opposite to
anticlockwise, antibiotic
auto-
means “self”
autobiography, automat
dis-
means “not, or away”
dissimilar, disconnect
inter-
means “between”
international, intermarry
mis-
means “wrong”
misunderstand, misspell
post-
means “after”
postnatal, postscript
pre-
means before
prenatal, prehistoric
pro-
means “for, or forward”
propose, pro-British
re-
means “again, or back”
rewrite, reconsider
sub-
means “under”
submarine, substandard
super-
means “above”
supervisor, superhuman