To cause or engage (someone or something) to participate or to become connected or implicated.
To take in; to gather in; to mingle, blend or merge.
To comprise or include; to have as a related part.
To complicate or make intricate.
To envelop, enfold, entangle.
To carry out an action, the result of which is a significant change, or an altered circumstance.
To be of importance; to matter.