{"era":"current","word":"rugged","meaning":"rough, uneven, or strongly contoured","children":[{"era":"1200s","word":"Middle English rugged / roggyd / ruggyd","meaning":"rough, shaggy","children":[{"era":"pre-1100","word":"Old Norse rǫgg","meaning":"tuft, shagginess","children":[],"language":"Old Norse"},{"era":"pre-1100","word":"-ed","meaning":"adjectival suffix","children":[],"language":"English suffix"}],"language":"Middle English"}],"language":"Modern English"}