| una |
| 1. n-f. feminine of uno | |
| a la una, a las dos y a las tres - after three...one, two, three | |
| 2. art. feminine singular of un | |
| 3. det. feminine singular of uno | |
| 4. pron. one (an indefinite plural pronoun using a singular feminine item, used for females) | |
| 5. v. third-person singular present subjunctive of unir | |
| unir |
| 1. v. to unite, join | |
| ¡Únete al sindicato! (Join up with the union!) | |
| 2. v. to merge, conflate | |
| un |
| 1. art. a | |
| 2. num. (before the noun) apocopic form of uno one | |
| indagación |
| 1. n-f. investigation | |
| científica |
| 1. n-f. female equivalent of científico | |
| 2. adj. feminine singular of científico | |
| científico |
| 1. adj. scientific | |
| 2. n-m. scientist | |
| debe |
| 1. v. informal second-person singular affirmative imperative of deber | |
| deber |
| 1. v. to owe | |
| Debo mucho dinero. (I owe a lot of money.) | |
| 2. v. (auxiliary) must, to need to, to have to (rarely used in the conditional with this meaning) | |
| Debo estudiar. (I must study.) | |
| Eso debe haber sido muy difícil. - That must have been really hard. | |
| 3. v. (auxiliary) should, to ought to, to be supposed to, to be to | |
| Debería haber un plan en marcha. - There should be a plan in place. | |
| La gente no debería mensajear y conducir. - People aren't supposed to text and drive. | |
| Deberías disculparte. - You ought to apologize. | |
| Usted debe despertarse antes del amanecer. - You are to be up before sunrise. | |
| Los niños deberían dormir un poco. - The children should get some sleep. | |
| 4. v. (auxiliary) should have (in the preterite; having haber follow "deber" is optional and not required) | |
| Debiste esperarme. - You should have waited for me. | |
| Debiste haberme esperado. - You should have waited for me. | |
| 5. v. (auxiliary) shall (future tense usually) | |
| 6. v. to be due to, to be attributable to, to be the result of, to be caused by | |
| 7. v. (with de and infinitive) probably or most likely do or happen something (add a degree of insecurity to the verb) | |
| Debes de viajar por avión, China está muy lejos. (You should probably travel by plane, China is very far away.) | |
| 8. n-m. obligation, duty | |
| 9. n-m. debt | |
| 10. n-m. should, ought (modal noun) | |
| 11. n-m. (usually in the plural) homework | |
| ser |
| 1. v. to be (essentially or identified as) | |
| Yo soy de los Estados Unidos. - I am from the United States. | |
| Errar es humano. - To err is human. | |
| 2. v. to be (in the passive voice sense) | |
| La guitarra fue tocada. - The guitar was played. | |
| 3. v. to exist; to occur | |
| La fiesta será mañana. - The party will be tomorrow. | |
| 4. n-m. a being, organism | |
| 5. n-m. nature, essence | |
| 6. n-m. value, worth | |
| vital |
| 1. adj. vital | |
| total |
| 1. adj. total, complete, outright | |
| 2. adv. (colloquial) basically, so, in short (used to summarise) | |
| Total que no puedo venir. - Basically, I can't come. | |
| 3. n-m. total | |
