Definify.com
Definition 2024
perustua
perustua
Finnish
(index pe)
Verb
perustua
- (intransitive, of a work of art, + illative) To be based on.
- Elokuva perustuu tositapahtumiin.
- The movie is based on a true story.
- Elokuva perustuu tositapahtumiin.
- (intransitive, of an opinion, + illative) To be based on, be grounded in.
- Mihin mielipiteesi perustuu?
- What is your opinion based on?
- Mihin mielipiteesi perustuu?
- (intransitive, of some sort of system, + illative) To be founded on, be based on, rest on.
- Tämä yhteiskunta perustuu luottamukselle.
- This society rests on confidence.
- Tämä yhteiskunta perustuu luottamukselle.
Conjugation
| Inflection of perustua (Kotus type 52/sanoa, no gradation) | ||||||
|---|---|---|---|---|---|---|
| indicative mood | ||||||
| present tense | perfect | |||||
| person | positive | negative | person | positive | negative | |
| 1st sing. | perustun | en perustu | 1st sing. | olen perustunut | en ole perustunut | |
| 2nd sing. | perustut | et perustu | 2nd sing. | olet perustunut | et ole perustunut | |
| 3rd sing. | perustuu | ei perustu | 3rd sing. | on perustunut | ei ole perustunut | |
| 1st plur. | perustumme | emme perustu | 1st plur. | olemme perustuneet | emme ole perustuneet | |
| 2nd plur. | perustutte | ette perustu | 2nd plur. | olette perustuneet | ette ole perustuneet | |
| 3rd plur. | perustuvat | eivät perustu | 3rd plur. | ovat perustuneet | eivät ole perustuneet | |
| passive | perustutaan | ei perustuta | passive | on perustuttu | ei ole perustuttu | |
| past tense | pluperfect | |||||
| person | positive | negative | person | positive | negative | |
| 1st sing. | perustuin | en perustunut | 1st sing. | olin perustunut | en ollut perustunut | |
| 2nd sing. | perustuit | et perustunut | 2nd sing. | olit perustunut | et ollut perustunut | |
| 3rd sing. | perustui | ei perustunut | 3rd sing. | oli perustunut | ei ollut perustunut | |
| 1st plur. | perustuimme | emme perustuneet | 1st plur. | olimme perustuneet | emme olleet perustuneet | |
| 2nd plur. | perustuitte | ette perustuneet | 2nd plur. | olitte perustuneet | ette olleet perustuneet | |
| 3rd plur. | perustuivat | eivät perustuneet | 3rd plur. | olivat perustuneet | eivät olleet perustuneet | |
| passive | perustuttiin | ei perustuttu | passive | oli perustuttu | ei ollut perustuttu | |
| conditional mood | ||||||
| present | perfect | |||||
| person | positive | negative | person | positive | negative | |
| 1st sing. | perustuisin | en perustuisi | 1st sing. | olisin perustunut | en olisi perustunut | |
| 2nd sing. | perustuisit | et perustuisi | 2nd sing. | olisit perustunut | et olisi perustunut | |
| 3rd sing. | perustuisi | ei perustuisi | 3rd sing. | olisi perustunut | ei olisi perustunut | |
| 1st plur. | perustuisimme | emme perustuisi | 1st plur. | olisimme perustuneet | emme olisi perustuneet | |
| 2nd plur. | perustuisitte | ette perustuisi | 2nd plur. | olisitte perustuneet | ette olisi perustuneet | |
| 3rd plur. | perustuisivat | eivät perustuisi | 3rd plur. | olisivat perustuneet | eivät olisi perustuneet | |
| passive | perustuttaisiin | ei perustuttaisi | passive | olisi perustuttu | ei olisi perustuttu | |
| imperative mood | ||||||
| present | perfect | |||||
| person | positive | negative | person | positive | negative | |
| 1st sing. | — | — | 1st sing. | — | — | |
| 2nd sing. | perustu | älä perustu | 2nd sing. | ole perustunut | älä ole perustunut | |
| 3rd sing. | perustukoon | älköön perustuko | 3rd sing. | olkoon perustunut | älköön olko perustunut | |
| 1st plur. | perustukaamme | älkäämme perustuko | 1st plur. | olkaamme perustuneet | älkäämme olko perustuneet | |
| 2nd plur. | perustukaa | älkää perustuko | 2nd plur. | olkaa perustuneet | älkää olko perustuneet | |
| 3rd plur. | perustukoot | älkööt perustuko | 3rd plur. | olkoot perustuneet | älkööt olko perustuneet | |
| passive | perustuttakoon | älköön perustuttako | passive | olkoon perustuttu | älköön olko perustuttu | |
| potential mood | ||||||
| present | perfect | |||||
| person | positive | negative | person | positive | negative | |
| 1st sing. | perustunen | en perustune | 1st sing. | lienen perustunut | en liene perustunut | |
| 2nd sing. | perustunet | et perustune | 2nd sing. | lienet perustunut | et liene perustunut | |
| 3rd sing. | perustunee | ei perustune | 3rd sing. | lienee perustunut | ei liene perustunut | |
| 1st plur. | perustunemme | emme perustune | 1st plur. | lienemme perustuneet | emme liene perustuneet | |
| 2nd plur. | perustunette | ette perustune | 2nd plur. | lienette perustuneet | ette liene perustuneet | |
| 3rd plur. | perustunevat | eivät perustune | 3rd plur. | lienevät perustuneet | eivät liene perustuneet | |
| passive | perustuttaneen | ei perustuttane | passive | lienee perustuttu | ei liene perustuttu | |
| Nominal forms | ||||||
| infinitives | participles | |||||
| active | passive | active | passive | |||
| 1st | perustua | present | perustuva | perustuttava | ||
| long 1st2 | perustuakseen | past | perustunut | perustuttu | ||
| 2nd | inessive1 | perustuessa | perustuttaessa | agent1, 3 | perustuma | |
| instructive | perustuen | — | negative | perustumaton | ||
| 3rd | inessive | perustumassa | — | 1) Usually with a possessive suffix. 2) Used only with a possessive suffix; this is the form for the third-person singular and third-person plural. |
||
| elative | perustumasta | — | ||||
| illative | perustumaan | — | ||||
| adessive | perustumalla | — | ||||
| abessive | perustumatta | — | ||||
| instructive | perustuman | perustuttaman | ||||
| 4th | nominative | perustuminen | ||||
| partitive | perustumista | |||||
| 5th2 | perustumaisillaan | |||||