{adj. phr.}, {informal} Important; worth talking about; worth noticing. - Usually used in negative sentences. * /Did it rain yesterday? Not to speak of./ * /What happened at the meeting? Nothing to speak of./ * /Judy's injuries were nothing to speak of; just a few scratches./ Compare: NOT TO MENTION.
TO SPEAK OF
Meaning of TO SPEAK OF in English
Slang English vocab. Английский сленговый словарь. 2012