noun import ['ɪmp:t]
verb import [ɪm'p:t]
In such pairs of words the nuclear accent in the noun is on the initial syllable, while in the verb on the last.
Besides, a difference in the position of the nuclear accent may distinguish a compound noun from a free (syntactical) word combination, e.g.
a blackbird [ə 'blækbə:d]
a black bird [ə 'blæk 'bə:d]
The Basic Rules of English Word Accentuation
In most disyllabic words the accent falls on the initial syllable, e.g.
ready ['redɪ], mother ['mðə], colour ['klə], palace ['pælɪs]
In disyllabic words with a prefix which has lost its meaning the stress falls on the second syllable (on the root syllable), e.g.
become [bɪ'km] begin [ bɪ'ɡɪn] pronounce [prə'nauns]
In disyllabic verbs ending in -ate, -ise, -ize, -fy the stress falls on the last syllable, e.g.
dictate [dɪk'teɪt] surprise [sə'praɪz] defy [dɪ'faɪ]
In most words of three or four syllables the accent falls on the third syllable from the end of the word, e.g.
family ['fæmɪlɪ] cinema ['sɪnɪmə]
The accent on the third syllable from the end is especially typical of polysyllabic verbs with the suffixes -ize, -fy, -ate, e.g.
recognize ['rekəgnaɪz] demonstrate [ 'demənstreɪt] qualify ['kwlɪfaɪ]
The accent falls on the third syllable from the end of the word before the following suffixes:
- logy psychology [saɪ'kləʤɪ]
- logist biologist [baɪ'ləʤɪst]
- graphy geography [ʤɪ'ɡrəfɪ]
- grapher geographer [ʤɪ'ɡrəfə]
- cracy democracy [dɪ'mkrəsɪ]
The accent falls on the second syllable from the end of the word before the following suffixes:
- ian physician [fɪ'zɪn]
- ience experience [ɪks'pɪərɪəns]
- ient expedient [ɪks'pi:djənt]
- cient efficient [ɪ'fɪənt]
- al parental [pə'rentl]
- ial essential [ɪ'senl]
- ual habitual [hə'bɪtuəl]
- eous courageous [kə'reɪʤəs]
- ious delicious [dɪ'lɪəs]
- iar familiar [fə'mɪljə]
The accent falls on the final syllable formed by the following suffixes: -ee, -eer, -ier, -ade, -esque. The root syllable in such words has secondary accent.
refuge ['refju:ʤ] - refugee [refju:'ʤi:]
employ [ɪm'plɪ] - employee [emplɪ'i:]
engine ['enʤɪn] - engineer [enʤɪ'nɪə]
picture ['pɪkʧə] - picturesque [pɪkʧə'resk]
Most words of more than four syllables have two stresses: primary (nuclear) and secondary.
The primary stress falls either on the third or the second syllable from the end.
In most words the secondary stress falls on the syllable separated from the nuclear syllable by one unstressed syllable, e.g.
pronunciation [prənnsɪ'eɪn] governmental [gvn'mentəl]
In many derivative nouns the secondary stress falls on the same syllable which has the primary stress in the original word. In such nouns the syllable with the secondary stress may be separated from the nuclear syllable by two or even three unstressed syllables, e.g.
organize [':ɡənaɪz] → organization [:ɡənaɪ'zeɪn]
experiment [ɪks'perɪmənt] → experimentation [ɪksperɪmen'teɪn]
peculiar [pɪ'kju:ljə] → peculiarity [pɪkju:lɪ'ærɪtɪ]
If the original word has both a primary and a secondary stress, the secondary stress in the derivative word remains on the same syllable, while the primary stress changes its place and falls on the syllable immediately preceding the suffix.
recommend [rekə'mend] → recommendation [rekəmen'deɪn]
represent [reprɪ'zent] → representation [reprɪzen'teɪn]
Most English words which have two primary stresses are formed with prefixes or suffixes. One of two primary stresses falls on the root syllable, the other on the suffix or the prefix, e.g.
trustee ['trs'ti:] Chinese [ 'ʧaɪ'ni:z] illegal ['ɪ'lɪ:ɡəl]
Numerals from 13 to 19 are pronounced with two primary stresses: the first primary stress falls on the root syllable and the nuclear stress falls on the suffix –teen, e.g.
fourteen ['f:'ti:n] sixteen ['sɪks'ti:n]
Words with separable prefixes also have two primary primary stresses. They are as follows:
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