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actinic
actinide
actinism
actinium
actino-
actinolite
actinometer
actinomorphic
actinomycete
actinomycin
actinomycosis
actinopterygian
actinouranium
action
action figure
action game
action group
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act up
act up


intransitive verb 
Definition:
 
be troublesome: to cause trouble or pain
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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