Oxford American Thesaurus of Current English
Guide to The Oxford American Thesaurus of Current English
HEADWORDS
The text of The Oxford American Thesaurus of Current English is organized under headwords, which are displayed in bold type. The headwords are listed in strict alphabetical order.
Many English words have two or more acceptable spellings; in this dictionary, the one used is the one regarded as being the most common. Occasionally, two spellings share nearly equal usage; in such cases, the headwords include both forms. For example:
cagey, cagy adjective guarded, secretive, noncommittal,
cautious, chary, wary, careful, shrewd, wily ....
PARTS OF SPEECH
A headword is always followed by its part of speech. When a word has two or more different parts of speech, it is listed more than once with separate entries for each. For example:
obscure adjective 1 
obscure references: unclear, indeterminate,
opaque ....
obscure verb 1 
obscure the main issue: confuse, blur, muddle ....
Not all parts of speech of a word are necessarily included as headwords. For example, many words that function as adjectives can also function as adverbs. In such cases, the adverbial senses are included only when they have useful sets of synonyms.
HOMOGRAPHS
Certain words have the same spelling but different meanings and different etymologies (origins). Such words, known as homographs, are treated as separate headwords, even when they have the same part of speech. For the purposes of
bank1 | noun 1 | a grassy bank: slope, rise, incline .... |
bank2 | verb | bank an aircraft: tilt, slope, slant .... |
bank3 | noun 1 | borrow from the bank: financial institution; |
commercial bank ....
If two or more headwords are identical in spelling but have different parts of speech, homograph numbers are not used. This does not necessarily imply that these entries share the same etymology.
ENTRIES
Each entry contains a list of words that are synonyms of the headword: i.e., the words can be used in place of the headword in most (although not all) contexts. When a word has more than one meaning, the different senses of the word are numbered. In many instances, example phrases (followed by 
symbol) indicate the particular sense and illustrate the use of the word. In some cases, two or more examples are given; these are separated by a vertical bar (). For example:
contribute verb 1 
contribute money/time to the charity happy
to contribute: give, donate, hand out ....
Note that a slash (/) is used to separate alternative words in order to save space. The slash applies only to the two words it separates; thus “contribute time/money” can be read as “contribute time” and “contribute money”.
SUBENTRIES
Verb phrases are included as subentries (in bold type) under a main entry. For example:
chance verb 1 
it chanced that they arrived last: happen, occur,
take place, come about, .... 2 | have to chance it: risk, hazard, |
gamble, .... chance on/ upon | chance upon an old friend |
chanced on the answer: come across, meet, stumble on, come upon, encounter; inf. bump into, run into.
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