Var. patāʾu, patû.
Derived words: mupettītu ‘opener’ (AHw. 674, CDA 217); mupettû ‘(a person) opening a sluice-gate’ (CAD M₂ 210, AHw. 674); naptētu ‘key’ (CAD N₁ 324, AHw. 742); naptû (neptû) ‘key’ (CAD N₁ 324, AHw. 742); neptû ‘opening, breach’ (CAD N₂ 171, AHw. 779); pattû ‘informed’ (CAD P 546); pattūtu ‘open chariot’ (CAD P 286, AHw. 849); pētânu ‘opener’ (AHw. 858); petîš ‘openly’ (CAD P 337, AHw. 858); petītu (patītu) ‘opened, mated’ (CAD P 337); pētû ‘opener’ (CAD P 357, AHw. 861); petû (patû, patiˀu, patˀu) ‘open’ (adj.) (CAD P 338, AHw. 858); petûtu (or pētûtu) ‘revelation’ (CAD P 358, AHw. 861), pītu (a musical term) (CAD P 447, AHw. 871); pītu (pitû) ‘opening’ (CAD P 445, AHw. 871); šaptû ‘opened up’ (CDA 358); taptû ‘opened up’ (CAD T 196, AHw. 1323); teptītu (teptētu, taptītu, taptētu) ‘opening up (land for cultivation)’ (CAD T 346, AHw. 1347).