German reference
knacken
to crack (a nut, a code); to creak
Regular · 13 form tables
Includes indicative, subjunctive I and II, and imperative forms. Separable verbs retain their word order in each form.
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Indicative
Present
| Person, form or usage | Form and meaning |
|---|---|
| ich | I crack |
| du | you crack |
| er/sie/es | he/she/it cracks |
| wir | we crack |
| ihr | you (plural) crack |
| sie/Sie | they crack; you (formal) crack |
Simple past
| Person, form or usage | Form and meaning |
|---|---|
| ich | I cracked |
| du | you cracked |
| er/sie/es | he/she/it cracked |
| wir | we cracked |
| ihr | you (plural) cracked |
| sie/Sie | they cracked; you (formal) cracked |
Compound past
| Person, form or usage | Form and meaning |
|---|---|
| ich | I cracked; I have cracked |
| du | you cracked; you have cracked |
| er/sie/es | he/she/it cracked; he/she/it has cracked |
| wir | we cracked; we have cracked |
| ihr | you (plural) cracked; you (plural) have cracked |
| sie/Sie | they cracked; they have cracked; you (formal) cracked; you (formal) have cracked |
Past perfect
| Person, form or usage | Form and meaning |
|---|---|
| ich | I had cracked |
| du | you had cracked |
| er/sie/es | he/she/it had cracked |
| wir | we had cracked |
| ihr | you (plural) had cracked |
| sie/Sie | they had cracked; you (formal) had cracked |
Future
| Person, form or usage | Form and meaning |
|---|---|
| ich | I will crack |
| du | you will crack |
| er/sie/es | he/she/it will crack |
| wir | we will crack |
| ihr | you (plural) will crack |
| sie/Sie | they will crack; you (formal) will crack |
Future perfect
| Person, form or usage | Form and meaning |
|---|---|
| ich | I will have cracked |
| du | you will have cracked |
| er/sie/es | he/she/it will have cracked |
| wir | we will have cracked |
| ihr | you (plural) will have cracked |
| sie/Sie | they will have cracked; you (formal) will have cracked |
Subjunctive
Subjunctive I
| Person, form or usage | Form and meaning |
|---|---|
| ich | (that) I crack |
| du | (that) you crack |
| er/sie/es | (that) he/she/it cracks |
| wir | (that) we crack |
| ihr | (that) you (plural) crack |
| sie/Sie | (that) they crack; (that) you (formal) crack |
Subjunctive II
| Person, form or usage | Form and meaning |
|---|---|
| ich | I would crack |
| du | you would crack |
| er/sie/es | he/she/it would crack |
| wir | we would crack |
| ihr | you (plural) would crack |
| sie/Sie | they would crack; you (formal) would crack |
Past subjunctive II
| Person, form or usage | Form and meaning |
|---|---|
| ich | I would have cracked |
| du | you would have cracked |
| er/sie/es | he/she/it would have cracked |
| wir | we would have cracked |
| ihr | you (plural) would have cracked |
| sie/Sie | they would have cracked; you (formal) would have cracked |
Would form
| Person, form or usage | Form and meaning |
|---|---|
| ich | I would crack |
| du | you would crack |
| er/sie/es | he/she/it would crack |
| wir | we would crack |
| ihr | you (plural) would crack |
| sie/Sie | they would crack; you (formal) would crack |
Past subjunctive I
| Person, form or usage | Form and meaning |
|---|---|
| ich | (reportedly) I have cracked |
| du | (reportedly) you have cracked |
| er/sie/es | (reportedly) he/she/it has cracked |
| wir | (reportedly) we have cracked |
| ihr | (reportedly) you (plural) have cracked |
| sie/Sie | (reportedly) they have cracked; (reportedly) you (formal) have cracked |
Future subjunctive I
| Person, form or usage | Form and meaning |
|---|---|
| ich | (reportedly) I will crack |
| du | (reportedly) you will crack |
| er/sie/es | (reportedly) he/she/it will crack |
| wir | (reportedly) we will crack |
| ihr | (reportedly) you (plural) will crack |
| sie/Sie | (reportedly) they will crack; (reportedly) you (formal) will crack |
Imperative
Imperative
| Person, form or usage | Form and meaning |
|---|---|
| du | crack! |
| ihr | crack! (plural) |
| sie/Sie | crack! (formal) |
Additional forms
- Infinitive with zu
- Present participle
- Past participle
- Past infinitive
Forms from the Loquus reference. Only supplied forms are shown. Browse all German entries.