Nominal Forms
| Infinitive | vajadzēt |
| Negative Infinitive | nevajadzēt |
| Verbal Noun | vajadzēšana |
Indicative
Past
| Sg.3 | vajadzēja |
| Pl.3 | vajadzēja |
Future
| Sg.3 | vajadzēs |
| Pl.3 | vajadzēs |
Imperative
| Sg.3 | lai vajag |
| Pl.3 | lai vajag |
Conditional
| Present | vajadzētu |
| Past | būtu vajadzējis |
Renarrative
| Present | vajagot |
| Past | esot vajadzējis |
| Future | vajadzēšot |
| Imperative | lai vajagot |
Debitive
| Indicative | būt jāvajag |
| Conjunctive 1 | esot jāvajag |
| Conjunctive 2 | jāvajagot |
Participles
| Present Active 1 | vajagošs |
| Past Active | vajadzējis |
| Past Passive | vajadzēts |
Verbs conjugated like vajadzēt
vajadzēt,
Etymology
Borrowed from Livonian vajāg (“necessary”); cf. Estonian vaja (“necessary; need; lack”), Finnish vajaa (“incomplete, inadequate; need”), Veps vajag (“incomplete”). In 16th-18th century texts, the word (in the older form vaijaga) is used as an adjective, often accompanied by the copula (vaijaga ir... “it is necessary”), following the original Livonian pattern. From the 17th century on, it began occurring also by itself in a dative construction (man vajag... “I need”), from which it was reinterpreted as a verb, so that further forms — an infinitive vajadzēt, a past tense vajadzēja, a future tense vajadzēs, a conditional form vajadzētu, etc. — were created by analogy (compare tecēt (“to flow”), third person present tek, third person past tecēja, etc.). Some participial forms, however, are lacking, and others (vajagošs) are barely attested. See: Finnish with old forms '
vajaa'.
Translations
need, to have an absolute requirement for