{"era":"current","word":"unspeakable","meaning":"too extreme to be expressed in words","children":[{"era":"1300s","word":"un- + speakable","meaning":"not able to be spoken","children":[{"era":"pre-1100","word":"un-","meaning":"negative prefix","children":[],"language":"Old English"},{"era":"pre-1100","word":"specan / sprecan","meaning":"to speak","children":[{"era":"pre-500","word":"*sprekanan","meaning":"to speak","children":[{"era":"3000s BCE","word":"*spreg-","meaning":"to make a sound, to speak","children":[],"language":"Proto-Indo-European"}],"language":"Proto-Germanic"}],"language":"Old English"}],"language":"Middle English"}],"language":"Modern English"}