Ten letter anagrams
| inactivate vaticinate acervation vacationer attraction tractation parentally paternally alarmingly marginally antagonist stagnation decimation medication coordinate decoration dictionary indicatory excitation intoxicate neoplastic pleonastic |
infarction infraction denominate emendation admonition domination enervation veneration levitation velitation filtration flirtation graphology logography egocentric geocentric indiscreet indiscrete iridescent discreetly discretely discoverer rediscover |
compressed decompress centimeter centimetre percussion supersonic percursory precursory millimeter millimetre impressive permissive petitioner repetition repression respersion persistent prettiness impression permission |
Found, spring 2000, in dictionary by dpd using process described here.