Participles
| Present | petkānts |
| Past | petkātos |
Verbal nouns
| tu-derivative | petkātum |
| s-derivative | petkāzi |
Active
Indicative Present
| 1st sing. | petkāō |
| 2nd sing. | petkās |
| 3rd sing. | petkāt |
| 1st plur. | petkāmos |
| 2nd plur. | petkātes |
| 3rd plur. | petkānt |
Subjunctive Present
| 1st sing. | petkāēm? |
| 2nd sing. | petkāēs? |
| 3rd sing. | petkāēd? |
| 1st plur. | petkāēmos? |
| 2nd plur. | petkāētes? |
| 3rd plur. | petkāēnd? |
Indicative Perfect
Imperative Present
Passive
Indicative Present
| 1st sing. | petkāōr |
| 2nd sing. | petkāzo |
| 3rd sing. | petkātor |
| 1st plur. | petkāmor |
| 2nd plur. | petkām(e?)n(ai?) |
| 3rd plur. | petkāntor |
Subjunctive Present
| 1st sing. | petkāēr? |
| 2nd sing. | petkāēzo? |
| 3rd sing. | petkāētor? |
| 1st plur. | petkāēmor? |
| 2nd plur. | petkāēm(e?)n(ai?)? |
| 3rd plur. | petkāēntor? |
Imperative Present
Etymology
1. Etymology tree
2. Proto-Indo-European *ped-
3. Proto-Indo-European *-ko-
4. Proto-Indo-European *pedko-
5. Proto-Indo-European *pet-
6. Proto-Indo-European *-ko-
7. Proto-Indo-European *petko-
8. Proto-Italic *petko-?
9. Proto-Indo-European *-h₂
10. Proto-Indo-European *-éh₂
11. Proto-Indo-European *-yéti
12. Proto-Indo-European *-eh₂yéti
13. Proto-Indo-European *-h₂tiinflu.
14. Proto-Italic *-ājō
15. Proto-Italic *-āō
16. Proto-Italic *petkāō
17. Traditionally derived from Proto-Indo-European *ped-ko- (“having a fault at the root”), a formation of *ped- (“foot; to walk”) + *-ko- (suffix denoting faults), analogous to mancus (“maimed”, literally “having a fault in the hand”) and caecus (“blind”). However, no allusions to the concept of feet are found in the Italic word's descendants, and secondary connotations of "to make a faux pas" are figuratively better explained with an Italic word for "walking" (such as Latin ambulō (“to traverse, walk”)) than with *ped-, which does not denote "walking" in Italic.
18. Leumann, in contrast, derives the word from Proto-Indo-European *pet-ko- (“a fall, error”), from *pet- (“to fall”). This is semantically more tenable, though the addition of *-ko- is rather odd.
Verbs referencing "petkāō"
Latin
pecco.
Cognates
-