| Singular | Plural |
| banjo | banjos/banjoes |
| archipelago | archipelagos/es |
| cargo | cargos/cargoes |
| desperado | desperados/desperadoes |
| halo | halos/haloes |
| lasso | lassos/lassoes |
| mango | mango/mangoes |
| memento | mementos/mementoes |
| motto | mottos/mottoes |
| tornado | tornados/tornadoes |
| volcano | volcanos/volcanoes |
| zero | zeros/zeroes |