ug

ug · noun¹

1. Old Norse · derived fromuggr“fear, apprehension, dread”
2. Middle English · inherited fromugge
3. English todayug

From Middle English ugge, from Old Norse uggr (“fear, apprehension, dread”), related to Old Norse ógn (“terror, threat, dispute”) and agi (“terror, strife, fear, punishment”). More at awe.

ug · verb²

1. Old Norse · derived fromugga“to fear”
2. Middle English · inherited fromuggen
3. English todayug

From Middle English uggen, from Old Norse ugga (“to fear”), see above.

ug · noun³

1. Icelandic · derived fromuggi“fin”
2. English todayug

From Icelandic uggi (“fin”).

ug · noun, adjective⁴

Initialism of underground.