mingle

from The American Heritage® Dictionary of the English Language, 5th Edition.

• intransitive verb To mix or bring together in combination: synonym: mix.
• intransitive verb To be or become mixed or united.
• intransitive verb To associate or take part with others.

from The Century Dictionary.

• noun A mixture; a medley; a jumble.
• To mix; blend; combine intimately; form a combination of.
• To form by mixing or blending; combine the parts or ingredients of; compound or concoct.
• To bring into relation or association; connect or conjoin.
• To confuse; impair or spoil by mixture with something.
• Synonyms and Mingle, Mix, Blend. Mingle and mix are often quite synonymous; where they differ, mix is likely to be found to indicate a more complete loss of individuality by that which is joined with something else. Blend vividly suggests the joining of two or more colors to form a third, and so a passing of two or more sounds, qualities, or the like into each other in such a way as to produce a result partaking of the qualities of each.
• To be or become joined, combined, or mixed; enter into combination or intimate relation: as, to mingle with society; oil and water will not mingle.
• To be formed by mixingor blending.
• Synonyms see I.

from the GNU version of the Collaborative International Dictionary of English.

• transitive verb To mix; intermix; to combine or join, as an individual or part, with other parts, but commonly so as to be distinguishable in the product; to confuse; to confound.
• transitive verb To associate or unite in society or by ties of relationship; to cause or allow to intermarry; to intermarry.
• transitive verb To deprive of purity by mixture; to contaminate.
• transitive verb obsolete To put together; to join.
• transitive verb To make or prepare by mixing the ingredients of.
• noun obsolete A mixture.
• intransitive verb To become mixed or blended.
• intransitive verb To associate (with certain people).
• intransitive verb To move (among other people); -- of people.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• verb To mix; intermix; to combine or join, as an individual or part, with other parts, but commonly so as to be distinguishable in the product; to confuse; to confound.
• verb To associate or unite in society or by ties of relationship; to cause or allow to intermarry; to intermarry.
• verb To deprive of purity by mixture; to contaminate.
• verb obsolete : To put together; to join. Shakespeare.
• verb To make or prepare by mixing the ingredients of.
• verb intransitive To become mixed or blended.
• noun obsolete A mixture.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• verb to bring or combine together or with something else
• verb be all mixed up or jumbled together
• verb get involved or mixed-up with