We make plural by adding -s (or -es)
dog - dogs, week - weeks, table - tables
Nouns ending in -s, -ss, -z,-x,-ch,-sh = -es
- s | bus - buses
- ss | kiss - kisses
- z | buzz - buzzes
- x | box - boxes
- ch | watch - watches
- sh | bush - bushes
There’s one exception to this rule. If the -ch ending is pronounced with a ‘k’ sound, you add -s rather than -es:
- ch | stomach - stomachs
- ch | epoch - epochs
Nouns ending in -o can add either -s or -es.
- o | potato - potatoes
- o | tomato - tomatoes
- o | buffalo - buffaloes
- o | echo - echoes
- o | torpedo - torpedoes
- o | veto - vetoes
- o | domino - heroes
- o | hero - tomatoes
- o | mosquito - mosquitoes
- o | embargo - embargoes
- o | negro - negroes
Nouns ending in vowel (a, e, i, o, u) + o add -s. The same happens with most new words (ending in -o) that come into the English language.
- o | radio - radios
- o | studio -studios
- o | piano - pianos
- o | commando - radios
- o | logo - pianos
- o | zoo - zoos
- o | solo - radios
- o | soprano - pianos
- o | Eskimo - radios
- o | embryo - embryos
- o | kilo - kilos
- o | cello - cellos
Some of the nouns ending in -o that can be spelt with either -s or -es in the plural:
- o | banjo - banjoes - banjos
- o | mosquito - mosquitoes - mosquitos
- o | buffalo - buffaloes - buffalos
- o | tornado - tornadoes - tornados
- o | mango - mangoes - mangos
- o | zero - zeroes - zeros
- o | cargo - cargoes - cargos
- o | volcano - volcanoes - volcanos
- o | motto - mottoes - mottos
