From Longman Dictionary of Contemporary Englishput somebody down as something phrasal verbGUESSto guess what someone is like or what they do, without having much information about them I didn’t think he was unfriendly. I put him down as shy. → put→ See Verb table
Examples from the Corpus
put down as • Grunte put him down as 16/20.• In the terminology of the moment, put me down as a hanging chad.• We put this one down as a result.• He put that down as not his business.• Gradually vanishing, as governments grow more sensitive and put it down as summer diarrhoea.• He had put her down as Tiffany's successor. 