Denshi Jisho — Online Japanese dictionary

合 ごう 1: 0.18039 litres (liters);
2: 0.3306 metres square (meters);
3: one-tenth of the way from the base to the summit of a mountain;
4: (astronomical) conjunction;
5: (Counter) counter for covered containers;
6: counter for matches, battles, etc.
Common word, Noun 
合う あう 1: to come together; to merge; to unite; to meet;
2: to fit; to match; to suit; to agree with; to be correct;
3: to be profitable; to be equitable;
4: () (after the -masu stem of a verb) to do ... to each other; to do ... together
Common word, Godan verb with u ending, Intransitive verb 
合い あい joint; associate; accomplice
Noun, Prefix 
合え あえ food with dressing on it (e.g. salad)
Irregular kanji usage, Noun suffix, Noun prefix, Noun 
合う おう 1: to come together; to merge; to unite; to meet;
2: to fit; to match; to suit; to agree with; to be correct;
3: to be profitable; to be equitable;
4: () (after the -masu stem of a verb) to do ... to each other; to do ... together
Irregular kana usage, Godan verb with u ending, Intransitive verb 
合歓 ねむ silk tree
Noun 
合図 あいず sign; signal
Common word, Noun, Suru verb 
合間 あいま interval; break; pause; spare moment
Common word, Noun, No-adjective 
合致 がっち agreement; concurrence; conformance; compliance
Common word, Noun, Suru verb 
合点 がてん consent; assent; understanding; agreement; comprehension; grasp
Common word, Noun, Suru verb 
合意 ごうい agreement; consent; mutual understanding; accord
Common word, Noun, Suru verb, No-adjective 
合議 ごうぎ consultation; conference
Common word, Noun, Suru verb 
合否 ごうひ success or failure; result
Common word, Noun 
合理 ごうり rational
Common word, Noun 
合着 あいぎ between-season wear; clothes worn in spring or autumn (fall)
Noun, No-adjective 
会す あわす 1: to make (someone) to meet; to let (someone) meet;
2: to expose to; to subject to
Godan verb with su ending, Transitive verb 
合す あわす 1: to match (rhythm, speed, etc.);
2: to join together; to unite; to combine; to add up;
3: to face; to be opposite (someone);
4: to compare; to check with;
5: to cause to meet (e.g. an unpleasant fate);
6: to place together; to connect; to overlap;
7: to mix; to combine;
8: to put blade to blade; to fight
Godan verb with su ending, Transitive verb 
淡す あわす to remove the astringent taste from persimmons
Godan verb with su ending, Transitive verb 
遭す あわす 1: to make (someone) to meet; to let (someone) meet;
2: to expose to; to subject to
Godan verb with su ending, Transitive verb 
醂す あわす to remove the astringent taste from persimmons
Godan verb with su ending, Transitive verb 
合羽 かっぱ raincoat (por: capa); kappa; pluvial
Ateji (phonetic) reading, Noun 
合羽 カッパ raincoat (por: capa); kappa; pluvial
Ateji (phonetic) reading, Noun 
合す がっす to join together; to sum up; to combine; to unite; to mix; to agree with
Godan verb with su ending 
合祀 ごうし enshrining together
Noun, Suru verb 
合資 ごうし joint stocks; entering into partnership
Noun, Suru verb 
合字 ごうじ ligature
Noun 
合皮 ごうひ synthetic leather
Noun, Abbreviation 
合わす あわす 1: to match (rhythm, speed, etc.);
2: to join together; to unite; to combine; to add up;
3: to face; to be opposite (someone);
4: to compare; to check with;
5: to cause to meet (e.g. an unpleasant fate);
6: to place together; to connect; to overlap;
7: to mix; to combine;
8: to put blade to blade; to fight
Common word, Godan verb with su ending, Transitive verb 

Found 272 words. Page one, two, three, four, five, six, seven, eight, nine, 10

You can also

Look up kanji details for 合 あわす.

Try a Yahoo Jisho search for 合 あわす .
Try a Goo Jisho search for 合 あわす .
Try a Google search for 合 あわす .