-tava

See also: tava, tavā, tavă, táva, tāva, täva, ťava, and -tävä

Finnish

From Proto-Finnic *-ttapa, Proto-Finnic *-tapa (-ttava, -tava), from *-tta- (passive infix) + *-pa (active participle). The weak grade has been generalized like in -va.

-tava

Forms the present passive participle.
Luettavan teoksen nimi on...
The name of the work that is to be read is...

Formed by using the past passive stem and appending -ava, appearing either as -tava or -ttava depending on the verb.
Some inflected forms have specific uses:
- genitive singular: used with verbs of reporting or observing to refer to the action being done by someone (passively) according to that report or observation.
  Teosta sanotaan luettavan kurssilla.
  It is said that the work is being read on the course.
- inessive plural: used to express possibility or plausibility of an action.
  Se on tehtävissä.
  It's doable.
  
  (Note that the above sentence could also mean "it's in the tasks/exercises"; see tehtävä)