Rule V.—Doubling.
Monosyllables and other words accented on the last syllable, when they end with a single consonant, preceded by a single vowel, or by a vowel after qu, double their final letter before a suffix beginning with a vowel: as, rob + ed = robbed; fop + ish = foppish; squat + er = squatter; prefer' + ing = prefer'ring.
Exceptions.—X final, being equivalent to ks, is never doubled; and when the derivative does not retain the accent of the root, the final consonant is not always doubled: as, prefer' + ence = pref'erence.
Rule VI.—No Doubling.
A final consonant, when it is not preceded by a single vowel, or when the accent is not on the last syllable, should remain single before an additional syllable: as, toil + ing = tolling; cheat + ed = cheated; murmur + ing = murmuring.
PART II.—THE LATIN ELEMENT.
I.—LATIN PREFIXES.
| Prefix. | Signification. | Example. | Definition. |
| a- ab- abs- | = from | a-vert ab-solve abs-tain | to turn from. to release from. to hold from. |
| ad- a- ac- af- ag- al- an- ap- ar- as- | = to | ad-here a-gree ac-cede af-fix ag-grieve al-ly an-nex ap-pend ar-rive as-sent | to stick to. to be pleasing to. to yield to. to fix to. to give pain to. to bind to. to tie to. to hang to. to reach to. to yield to. |
NOTE.—The forms ac-, af-, etc., are euphonic variations of ad-, and follow generally the rule that the final consonant of the prefix assimilates to the initial letter of the root.