the world > relative properties > kind or sort > individual character or quality > the quality of being specific > specifically [phrase] > namely or that is to say
id esteOE
that is to sayc1175
that is to wit1340
that is to witting1340
to say1547
to wit1577
to understand1579
1579 J. Dee 15 June in Private Diary (1842) 5 To my heires and assignes for ever, to understand, Mr. Bullok and Mr. Taylor.