| Scots Words | Alt. Scots Words | English Meanings |
| o | of | |
| o' | of | |
| o'er | over | |
| o'erword | the refrain; catchword. | |
| o't | of it | |
| oan | on | |
| obleege | obleige | oblige |
| ochone | woe is me! | |
| ocht | anything+ nothing+ ought | |
| October | October | |
| offisher | officer | |
| on | on / upon | |
| oncairie | oncairrie+ onkerry+ oncairry | a fuss+ carry-on |
| oncome | oncum | the beginning+ |
| onding | downpour | |
| onfaa | onfaw | rain+ snow+ attack+ beginning |
| ongaun | behaviour | |
| ongauns | goings on | |
| onie | ony | any |
| onie ither bodie | anyone else | |
| oniebodie | anyone | |
| oniegate | anyway | |
| oniething | anything | |
| oniewey | anyway | |
| oniewey | at least+ at any rate+ anyhow | |
| onieweys | anywhere | |
| onions and oatmeal | boiled in a sheep's stomach. | |
| only | onlie | only |
| oo | ou | wool |
| oor | hoor | hour |
| oor | our | |
| oorie | chill+ sad | |
| oors | ours | |
| oorsel(s) | ourselves | |
| oose | ooze+ oos+ ouse+ ouze+ ous | woollen fluff+ dust |
| oot | out | |
| oot o | out of | |
| oot-stair | oustside staircase | |
| ootby | outside | |
| ootby | outlying+ distant | |
| ootcast | a quarrel | |
| ootcome | result+ effect+ profit | |
| ooten | ooton | out of |
| ootgane | past time+ fully | |
| ootgang | an outgoing+ departure+ expense | |
| ootgate | exit | |
| ootgaun | outgoing+ removing+ leaving+ | |
| oother | outher | fluff from frayed wool |
| ootland | ootlan | a stranger+ outcast |
| ootlin | alien+ outsider | |
| ootmaist | outermost | |
| ootower | atour | beyond+ across+ outside |
| ootpassin | termination | |
| ootrel | ooteral | a stranger |
| ootset | an ornament | |
| ootunner | from under | |
| ootwye | outweigh | |
| op'd | opened | |
| open | apen | open+ free to do |
| or | ere+ before+ till+ early | |
| or | or | |
| oranger | orange | |
| ordein | ordeen | ordain |
| ordinar | ordnar+ ornar | ordinary |
| orp | grumble+ complain | |
| orra | odd | |
| Orra | extra. | |
| orral | a scrap+ fragment | |
| orrals | bits and pieces+ odds and ends | |
| ort | waste | |
| oubit | oobit | caterpillar |
| ouf | oof | small unimportant+ a fool |
| ought | aught. | |
| oughtlins | aughtlins | |
| ouglie | oogly | ugly |
| oul(et) | ool(et) | an owl |
| ourichie | oorichie | dismal+ gloomy+ strange |
| ourie | oorie | dismal+ gloomy+ strange |
| ourie | shivering | |
| ourit | oorit | cold+ shivery+ tired |
| ourlich | oorlich | miserable looking |
| outler | unhoused | |
| ower | over+ across+ farther off | |
| ower | excessively+ too | |
| owerby | over the way | |
| owerend | oweren | turn up+ set on end |
| owergae | surpass+ overflow | |
| owerhail | overtake | |
| owerset | translate(d) | |
| owertaen | made helpless+ overcome+ | |
| owerturn | repeat a song+ story+ turnover | |
| owerwird | owerword | chorus of poem or song |
| owre | over | |
| owsen | oxen | |
| owthor | author | |
| oxter | armpit | |
| oxter'd | held up under the arms | |
| Pace | Easter | |
| Pack an' thick | confidential. | |
| packman | a travelling merchant |