Via German Low German (and probably already Middle Low German) from Middle Dutch or early modern Dutch haperen.
hapern (weak, third-person singular present hapert, past tense haperte, past participle gehapert, auxiliary haben)
infinitive | hapern | ||||
---|---|---|---|---|---|
present participle | hapernd | ||||
past participle | gehapert | ||||
auxiliary | haben | ||||
indicative | subjunctive | ||||
singular | plural | singular | plural | ||
present | ich hapre ich hapere ich haper |
wir hapern | i | ich hapere ich hapre |
wir hapern |
du haperst | ihr hapert | du haperest du haprest |
ihr haperet ihr hapret | ||
er hapert | sie hapern | er hapere er hapre |
sie hapern | ||
preterite | ich haperte | wir haperten | ii | ich haperte1 | wir haperten1 |
du hapertest | ihr hapertet | du hapertest1 | ihr hapertet1 | ||
er haperte | sie haperten | er haperte1 | sie haperten1 | ||
imperative | hapre (du) haper (du) hapere (du) |
hapert (ihr) |
1Rare except in very formal contexts; alternative in würde normally preferred.