| 1 | English | cost | To incur a charge of; to require payment of a ... |
| 2 | Middle English | cost | means |
| 3 | Middle English | costen | to cost |
| 4 | Old French | couster | Alternative form of coster; to cost |
| 5 | Medieval Latin | costo | — |
| 6 | Latin | consto | to stand together; to stand still; to remain the... |
| 7 | Latin | com- | allomorph of con- |
| 8 | Latin | con- | Used in compounds to indicate a being or bringing... |
| 9 | Latin | cum | with, along with; at; -fold |
| 10 | Old Latin | com | Alternative form of cum |
| 11 | Proto-Italic | kom | with, along, at |
| 12 | Proto-Indo-European | ḱóm | beside, near, by, with |
| 13 | Proto-Indo-European | ḱe | Deictic particle, here; Post-positional... |
| 14 | Middle English | kyt | — |
| 15 | Russian | кит | whale; genitive plural of ки́та |
| 16 | Old Church Slavonic | китъ | whale |
| 17 | Ancient Greek | κῆτος | whale, sea monster; abyss |