Use the hyphen:

1. With the prefix mid, except in cases of words in common use: e.g., mid-channel, but midsummer, midday, etc.

2. When two or more words (except proper names which form a unity in themselves) are combined, preceding a noun: e.g., the well-known financier, up-to-date equipment, go-as-you-please race; but a quaint old English tea-room.

In applying this rule be careful not to hyphenate adjectives and participles with adverbs which end in ly, nor with combinations such as those referred to when following a noun or qualifying a predicate: e.g., possessed of highly developed intelligence, a lawyer well thought of in his own city.

3. In such words as attorney-general, vice-president, rear-admiral, etc.; but not in viceroy, vicegerent, etc.

4. Compounds of color: e.g., olive-green, silver-gray, lemon-yellow, red-hot, etc. But in simple cases of adjective and noun, as brownish yellow or yellowish white the words are not compounded.

5. In nouns which stand in objective relation to each other, one of whose components is derived from a transitive verb: e.g., I am your well-wisher, He is a large property-holder, hero-worship, but not in bookkeeper, bookmaker, copyholder, dressmaker, lawgiver, proofreader, {47} taxpayer, and similar common short compounds.[8]

[8] See page [50,] Sec. 5.

6. In compounds of fellow: e.g., play-fellow, fellow-creatures, etc.; but bedfellow.

7. In compounds of father, mother, brother, sister, daughter, parent, and foster: e.g., father-feeling, mother-country, brother-love, sister-empire, foster-father, great-grandfather, etc.; but fatherland, fatherhead, grandfather.

8. In compounds of world and life: e.g., life-story, world-influence, etc.; but lifetime.

9. In compounds of master: e.g., master-painter, etc.; but masterpiece.

10. In compounds of god: e.g., sun-god, rain-god, etc.; but godson.

11. When half or quarter, etc., is combined with a noun: e.g., half-circle, half-title, quarter-mile, etc.; but quartermaster, headquarters, etc.

12. In compounds of self: e.g., self-esteem, self-respecting, etc., but not in selfhood, selfish, selfsame, or oneself.

13. In connecting ex, vice, general, elect, etc., constituting parts of titles, with the chief noun: e.g., ex-Governor Draper, Governor-elect Wilson, etc.

14. In compounds of by: e.g., by-laws, by-products, etc.

15. In connection with prefixes co, pre, and re when followed by words beginning with the same vowel as that in which they terminate, but not when followed by a {48} different vowel or a consonant: e.g., co-operation, but coeducation; pre-empted, but prearranged; re-elected, but recast. Exceptions: combinations with proper names, long or unusual formations, and words where the hyphen defines the meaning: e.g., re-creation and recreation, re-form and reform, re-collect and recollect, pre-Raphaelite.

16. In writing ordinal numbers when compounded with such words as first-rate, second-hand, etc.

17. In connection with the word quasi prefixed to a noun or to an adjective: e.g., quasi-corporation, quasi-compliant, etc.

18. In connection with the Latin prepositions extra, infra, semi, supra, and ultra: e.g., extra-hazardous but extraordinary; ultra-conservative but Ultramontane.

19. In spelling out fractional numbers involving more than two words: e.g., The supply is three-quarters exhausted; but, This leaves twenty-five hundredths.

20. In compounding numerals of one syllable with self-explanatory words of various meanings: e.g., three-legged, four-footed, one-armed, etc.

Also in combining numerals with nouns, to form an adjective: e.g. twelve-inch rule, hundred-yard dash, two-horse team, etc.

21. In compounding a noun in the possessive case with another noun: e.g., jews’-harp, crow’s-nest, etc. {49}

22. In some compounds with tree: e.g., apple-tree; but whippletree, crosstree, etc.

23. In compounding personal epithets: e.g., hard-headed, bow-legged, etc.

24. Use the hyphen in the following words: