| keel | (noun) one of the main longitudinal beams (or plates) of the hull of a vessel; can extend vertically into the water to provide lateral stability | - |
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| (noun) the median ridge on the breastbone of birds that fly | - |
| (noun) a projection or ridge that suggests a keel | - |
| (verb) walk as if unable to control one's movements | Synonyms: careen, lurch, reel, stagger, swag |
| keelboat | (noun) river boat with a shallow draught and a keel but no sails; used to carry freight; moved by rowing or punting or towing | - |
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| keeled | (adjective) having a ridge or shaped like a ridge or suggesting the keel of a ship | Synonyms: carinate, carinated, ridged |
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| keelson | (noun) a longitudinal beam connected to the keel of ship to strengthen it | - |
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| keen | (adjective) excellent | Synonyms: bang-up, bully, corking, cracking, dandy, great, groovy, neat, nifty, not bad, old, peachy, slap-up, smashing, swell |
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| (adjective) intense or sharp | Synonyms: exquisite |
| (adjective) having or demonstrating ability to recognize or draw fine distinctions | Synonyms: acute, discriminating, incisive, knifelike, penetrating, penetrative, piercing, sharp |
| (adjective) having a sharp cutting edge or point | - |
| (adjective) painful as if caused by a sharp instrument | Synonyms: cutting, knifelike, lancinate, lancinating, piercing, stabbing |
| (noun) a funeral lament sung with loud wailing | - |
| (verb) express grief verbally | Synonyms: lament |
| keenly | (adverb) in a keen or penetrating way | Synonyms: acutely |
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| keenness | (noun) thinness of edge or fineness of point | Synonyms: sharpness |
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| (noun) a quick and penetrating intelligence | Synonyms: acuity, acuteness, sharpness |
| (noun) a positive feeling of wanting to push ahead with something | Synonyms: avidity, avidness, eagerness |
| keep | (noun) the main tower within the walls of a medieval castle or fortress | Synonyms: donjon, dungeon |
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| (noun) a cell in a jail or prison | Synonyms: hold |
| (noun) the financial means whereby one lives | Synonyms: bread and butter, livelihood, living, support, sustenance |
| (verb) prevent (food) from rotting | Synonyms: preserve |
| (verb) prevent the action or expression of | Synonyms: hold back, keep back, restrain |
| (verb) stick to correctly or closely | Synonyms: maintain, observe |
| (verb) maintain by writing regular records | Synonyms: maintain |
| (verb) supply with necessities and support | Synonyms: maintain, sustain |
| (verb) hold and prevent from leaving | - |
| (verb) retain possession of | Synonyms: hold on |
| (verb) look after; be the keeper of; have charge of | - |
| (verb) retain rights to | Synonyms: hold open, keep open, save |
| (verb) maintain for use and service | Synonyms: maintain |
| (verb) have as a supply | - |
| (verb) store or keep customarily | - |
| (verb) stop (someone or something) from doing something or being in a certain state | Synonyms: prevent |
| (verb) allow to remain in a place or position or maintain a property or feature | Synonyms: continue, keep on, retain |
| (verb) conform one's action or practice to | Synonyms: observe |
| (verb) behave as expected during of holidays or rites | Synonyms: celebrate, observe |
| (verb) cause to continue in a certain state, position, or activity | Synonyms: hold, maintain |
| (verb) supply with room and board | - |
| (verb) maintain in safety from injury, harm, or danger | Synonyms: preserve |
| (verb) fail to spoil or rot | Synonyms: stay fresh |
| (verb) continue a certain state, condition, or activity | Synonyms: continue, go along, go on, proceed |
| (verb) to rear | - |
| keeper | (noun) one having charge of buildings or grounds or animals | Synonyms: custodian, steward |
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| (noun) someone in charge of other people | - |
| keeping | (noun) the responsibility of a guardian or keeper | Synonyms: guardianship, safekeeping |
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| (noun) conformity or harmony | - |
| (noun) the act of retaining something | Synonyms: holding, retention |
| keepsake | (noun) something of sentimental value | Synonyms: relic, souvenir, token |
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| keeshond | (noun) a spitz-like dog having a shaggy greyish coat and tightly curled tail originating in Holland | - |
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