Heiketä ^{(Verb type6)}

1. (intransitive) To weaken, become weaker.

   Hänen voimansa heikkenivät.

   He grew weaker.

2. (intransitive) To abate.

   Myrsky heikkeni.

   The storm abated.

3. (intransitive) To deteriorate.

   Hänen tilansa heikkenee.

   His condition is deteriorating.

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".