Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
‡ attegrāre, to pour out wine in sacrifices: attegrare enim est minus facere, ut integrare in statum redigere, Paul. ex Fest. p. 12 Müll. (Festus seems to have written the word ategrare, and to have considered the a as privativum; the Cod. Berol. has also ategrare, Fr.)