From late Middle High German touwen (“to thaw, dew”), a merger of two verbs:
The merger started in Central German dialects, many of which had d- in both verbs. The original form of verb 2 survives in verdauen (“to digest”).
tauen (weak, third-person singular present taut, past tense taute, past participle getaut, auxiliary haben)
infinitive | tauen | ||||
---|---|---|---|---|---|
present participle | tauend | ||||
past participle | getaut | ||||
auxiliary | haben | ||||
indicative | subjunctive | ||||
singular | plural | singular | plural | ||
present | ich taue | wir tauen | i | ich taue | wir tauen |
du taust | ihr taut | du tauest | ihr tauet | ||
er taut | sie tauen | er taue | sie tauen | ||
preterite | ich taute | wir tauten | ii | ich taute1 | wir tauten1 |
du tautest | ihr tautet | du tautest1 | ihr tautet1 | ||
er taute | sie tauten | er taute1 | sie tauten1 | ||
imperative | tau (du) taue (du) |
taut (ihr) |
1Rare except in very formal contexts; alternative in würde normally preferred.