The word disfrazábamos is the imperfect form of disfrazar in the first person plural.
See the full disfrazar conjugation

disfrazar

TRANSITIVE VERB
(to put a costume on)-to disguise as
Synonyms for disfrazar
TRANSITIVE VERB
(to conceal)-to disguise
Synonyms for disfrazar
Antonyms for disfrazar
Want to Learn Spanish?
Spanish learning for everyone. For free.
SpanishDict Premium
Have you tried it yet? Here's what's included:
Cheat sheets
No ads
Learn offline on iOS
Fun phrasebooks
Learn Spanish faster
Support SpanishDict