In some words we have the same syllable with the same sound in the next to the last syllable, as in _solitary, preliminary, ordinary, temporary_ etc. The syllable _ard_ with the sound of _erd_ is also found, as in _standard, wizard, mustard, mallard,_ etc.
Common words ending in _or_ with the sound of _er_:
honor valor mayor sculptor prior ardor clamor labor tutor warrior razor flavor auditor juror favor tumor editor vigor actor author conductor savior visitor elevator parlor ancestor captor creditor victor error proprietor arbor chancellor debtor doctor instructor successor rigor senator suitor traitor donor inventor odor conqueror senior tenor tremor bachelor junior oppressor possessor liquor surveyor vapor governor languor professor spectator competitor candor harbor meteor orator rumor splendor elector executor factor generator impostor innovator investor legislator narrator navigator numerator operator originator perpetrator personator predecessor protector prosecutor projector reflector regulator sailor senator separator solicitor supervisor survivor tormentor testator transgressor translator divisor director dictator denominator creator counsellor councillor administrator aggressor agitator arbitrator assessor benefactor collector compositor conspirator constructor contributor tailor
The _o_ and _a_ in such words as the above are retained in the English spelling because they were found in the Latin roots from which the words were derived. Some, though not all, of the above words in or are usually spelled in England with our, as _splendour, saviour,_ etc., and many books printed in this country for circulation in England retain this spelling. See { the end of the a}p{ pendix}ִ.
Another class of words in which we are often confused is those which end in _able_ or _ible_. The great majority end in _able,_ but a few derived from Latin words in _ibilis_ retain the _i_. A brief list of common words ending in _ible_ is subjoined:
compatible compressible convertible forcible enforcible gullible horrible sensible terrible possible visible perceptible susceptible audible credible combustible eligible intelligible irascible inexhaustible reversible plausible permissible accessible digestible responsible admissible fallible flexible incorrigible irresistible ostensible tangible contemptible divisible discernible corruptible edible legible indelible indigestible