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There are 8 eleven-letter words containing OACT

BIOACTIVITYbioactivity n. (Biology, medicine) Biologic activity, such as biochemical or immunologic reactivity: the biologic effect…
BIOACTIVITY n. the state of being bioactive.
NEUROACTIVEneuroactive adj. That acts on the central nervous system.
NEUROACTIVE adj. stimulating neural tissue.
PHOTOACTIVEphotoactive adj. Able to convert the energy of light into electricity via photoelectricity.
photoactive adj. Able to react chemically under the influence of light.
PHOTOACTIVE adj. affected physically or chemically by light or other radiation.
PROACTIVELYproactively adv. In a proactive manner; so as to look or plan ahead.
pro-actively adv. Alternative form of proactively.
RADIOACTIVEradioactive adj. Exhibiting radioactivity.
radioactive adj. (Figurative, rare) Dangerous and disgusting, particularly of people or ideas.
radioactive n. Any radioactive substance.
RETROACTINGretroacting v. Present participle of retroact.
RETROACT v. to act in return.
RETROACTIONretroaction n. Any action that has an influence due to a past event.
retroaction n. An opposing action; a reaction.
RETROACTION n. acting backward.
RETROACTIVEretroactive adj. Extending in scope, effect, application or influence to a prior time or to prior conditions.
RETROACTIVE adj. taking effect as from a previous date.

Scrabble words — in black are valid world wide — in RED are not valid in North America — in GREEN are valid only in North America.
Definitions are short excerpt from the WikWik.org and 1Word.ws.

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See this list for:

  • English Wiktionary: 32 words
  • Scrabble in French: 8 words
  • Scrabble in Spanish: 7 words
  • Scrabble in Italian: no word
  • Scrabble in German: no word
  • Scrabble in Romanian: 10 words


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