Denshi Jisho — Online Japanese dictionary

許す ゆるす 1: to permit; to allow; to approve;
2: to exempt (from fine); to excuse (from); to pardon; to forgive; to release; to let off;
3: to confide in;
4: to give up; to yield
Common word, Godan verb with su ending, Transitive verb 
允可 いんか permission; assent; compliance
Noun, Suru verb 
聴す ゆるす 1: to permit; to allow; to approve;
2: to exempt (from fine); to excuse (from); to pardon; to forgive; to release; to let off;
3: to confide in;
4: to give up; to yield
Godan verb with su ending, Transitive verb 
赦す ゆるす 1: to permit; to allow; to approve;
2: to exempt (from fine); to excuse (from); to pardon; to forgive; to release; to let off;
3: to confide in;
4: to give up; to yield
Godan verb with su ending, Transitive verb 
允許 いんきょ permission; licence; license
Noun, Suru verb 
允恭 いんきょう courtesy; sincerity
Noun 
許すまじ ゆるすまじ to be unforgivable; to never forgive something
Expression 
允文允武 いんぶんいんぶ being versed in the literary and military arts
Noun 

You can also

Look up kanji details for 允 ゆるす.

Try a Yahoo Jisho search for 允 ゆるす .
Try a Goo Jisho search for 允 ゆるす .
Try a Google search for 允 ゆるす .