Here are some further examples of adding suffixes -ed and -ing to words ending in 'fer'. Notice how the letter 'r' is doubled in the new word.

If the 'fer' syllable is stressed, double the last letter before adding suffix. E.g. In the word prefer, the syllable fer is stressed so when adding suffixes – ...

5-letter words that end in fer · offer · refer · wafer · defer · infer · lifer · gofer · fifer · rifer · safer · sofer · sefer · vafer · alfer · dufer ...

5-Letter Words Ending with FER: defer, infer, offer, refer, safer, wafer.

Add your suffix and say the word aloud. If the -fer is still stressed then double the r, like preferred. If the -fer is no longer stressed then leave it as a ...

8 Letter Words · chauffer · crucifer · lowlifer · mammifer · midlifer · misinfer · misrefer · pedalfer14 · reconfer13 · sclaffer16 ...

Verbs in ‑fer are usually figurative: transfer (from trans, across, so literally to carry across); defer and differ (both from Latin dis‑, apart); and confer ( ...

Words that end with FER: antilifer, aquafer, aquifer, biffer, bluffer, bodysurfer, briefer, buffer, chafer, chaffer, chamfer, chaufer, chauffer, chiefer, ...

This particular list shows all the words that end with the letters FER. There are quite a few words matching this search – words in this case.

Adding Suffixes Beginning with Vowel Letters to Words Ending in –fer Rule: Double the r if the 'fer' is still stressed when the ending is added.