First impression is powerful and slightly ambiguous. 威 (i — authority, commanding presence) carries real weight in Japanese — it appears in words ranging from 威厳 (igen — dignity, majesty) to 威圧 (iattsu — coercion) and 威嚇 (ikaku — intimidation). Most Japanese speakers will recognize it immediately, but the standalone character reads as a presence that can be dignified authority or, depending on context, somewhat intimidating. ...