Finally, many nouns ending in “o” can be spelled either way; for example, tornados/tornadoes, zeros/zeroes, and mosquitos/mosquitoes. Worksheets - ESL worksheets. focus – foci. The plural of words ending in -o. memo solo zero Both of the following are correct: volcanoes. 2. @Laure From CGEL, p.1586: "Plurals with 's: An apostrophe may be used to separate the plural suffix from the base with letters, numbers (notably dates), symbols, abbreviations, and words used metalinguistically: (i) p's and q's, 1960's, &'s, Ph.D.'s, if's and but's (ii) She got four A's and two B's. Add “es” to make the plurals: Add “s” to make the plurals: example: * To make a plural of a noun ending in “o” that is preceded by a consonant, add “es”. It’s your choice! Or use our Unscramble word solver to find your best possible play! 47. Plurals ending in o. Flashcards to use a games for memory etc. Here is a list of nouns ending in -o which are spelled -oes in the plural: List of nouns spelled -oes in the plural: Singular: Plural: one potato: two potatoes: one tomato: two tomatoes: one hero: two heroes: one domino: two dominoes: an echo: two, several echoes: Singular -o, plural -os. cactus – cacti. Many words ending in O are now listed with two spellings of the plural in contemporary dictionaries, especially newer words. As a general rule, most nouns ending in -o add -s to make the plural: singular plural ----- solo solos zero zeros avocado avocados Those which have a vowel before the final -o always just add -s: 8 If the singular noun ends in ‑us, the plural ending is frequently ‑i. Nouns ending in -o can add either -s or -es in the plural, and some can be spelled either way. With the unique word volcano, you can apply the standard pluralization for words that end in -o or not. The most common are potatoes, echoes, heroes, torpedoes, vetoes, and embargoes. Studyladder is an online english literacy & mathematics learning tool. The variation is pretty understandable, I think. Actually, there are very few nouns ending in “o” that need an es to make them plural, and you can just memorize them. The suffix -s will be added to: a) those nouns whose final -o is precedeed by a vowel: eg. volcanos. Plurals Worksheets English Grammar Worksheets Reading Comprehension Worksheets Learn English Grammar English Vocabulary Words Grammar Lessons English Language Learning English Lessons Teaching English. Domino game. Article by iSLCollective. Students review the rule for pluralizing nouns ending in the letter "o." Found 24869 words that end in o. Browse our Scrabble Word Finder, Words With Friends cheat dictionary, and WordHub word solver to find words that end with o. 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