10. Hyphenate compounds of great in phrases indicating degrees of descent; great-grandmother, great-great-grandfather.
11. Hyphenate compounds of life and world; life-history, world-influence, but (by exception) lifetime.
12. Compounds of skin with words of one syllable are printed solid, otherwise as two separate words; calfskin, sheepskin, alligator skin.
13. Hyphenate compounds of master; master-builder, master-stroke, but (by exception) masterpiece.
14. Hyphenate compounds of god when this word forms the second element; sun-god, war-god, godsend, godson.
15. Hyphenate compounds of half and quarter; half-truth, quarter-circle, half-title, but on account of difference in meaning of quarter, quartermaster, headquarters.
16. These prefixes
| ante- | infra- | re- | ||
| anti- | inter- | semi- | ||
| bi- | intra- | sub- | ||
| co- | pre- | super- | ||
| demi- | post- | tri- |
are ordinarily joined to the word with which they are used without a hyphen, except when followed by the same letter as that with which they terminate or by w or y;
| antechamber | post-temporal | |
| antiseptic | post-graduate | |
| anti-imperialistic | prearrange | |
| biennial | pre-empt | |
| bipartisan | recast | |
| co-equal | re-enter | |
| co-ordinate | semiannual | |
| demigod | subconscious | |
| inframarginal | subtitle | |
| international | superfine | |
| intersperse | tricolor | |
| intramural | co-workers | |
| intra-atomic | co-yield |