Irregular conjugation: stem vowel mutation (umlaut) in singular form of the second and third person in Present tense ("du lässt"). Loss of -s in the second person singular form of Present Indicative ("du lässt" instead of "du lässst"). There is a vowel change in the stem of Present tense ("ich lasse"), the stem of Preterite ("ich ließ") and the stem of Past Participle ("gelassen"). This model is applicable only for the verb "lassen" and its compounds. !! The verb "veranlassen" follows other conjugation pattern.
The verb has several variants of conjugation, which may correspond to different meanings. Please use the menu to select one or all variants.