aestivation, alignment, array, balance, calendar, categorisation, categorization, classification, collusion, columniation, composing, composition, contrivance, design, distribution, estivation, fenestration, formation, instrumentation, lattice, misalignment, ontology, orchestration, order, ordering, ordination, plan, prearrangement, proportion, proportionality, ramification, rearrangement, scaffold, spacing, tableau, tandem, venation, vernation.
Your query has returned 335 words, which include anagrams of arrangement as well as other shorter words that can be made using the letters included in arrangement.
The words in this list can be used in games such as Scrabble, Words with Friends and other similar games.