表示否定意義的字首
1)純否定字首
a-, an-, asymmetry(不對稱)anhydrous(無水的')
dis- dishonest, dislike
in-, ig-, il, im, ir, incapable, inability, ignoble, impossible, immoral, illegal, irregular
ne-, n-, none, neither, never
non-, noesense
neg-, neglect
un- unable, unemployment
2)表示錯誤的意義
male-, mal-, malfunction, maladjustment(失調)
mis-, mistake, mislead
pseudo-, pseudonym(假名), pseudoscience
3)表示反動作的意思
de-, defend, demodulation(解調)
dis-, disarm, disconnect
un-, unload, uncover
4)表示相反，相互對立意思
anti-, ant- antiknock( 防震), antiforeign,(排外的)
contra-, contre-, contro-, contradiction, controflow(逆流)
counter-, counterreaction, counterbalance
ob-, oc-, of-, op-, object, oppose, occupy
with-, withdraw, withstand
