Viettää ^{(Verb type1)}

1. to spend (time), pass the time

   viettää lomaa ― to holiday (Aus, NZ, UK), vacation (US)

2. to celebrate, commemorate (basically always with a qualifier, such as viettää syntymäpäiviä (“to celebrate birthday, to have a birthday party, etc.”))
3. (intransitive) to slope (down), incline

The present, imperfect, perfect, and pluperfect (past perfect) tenses in English correspond to "speaks", "spoke", "has spoken", and "had spoken".

The conditional present and perfect moods in English typically correspond to "would" and "would have".