This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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ad. In the highest position, place, or rank: finished uppermost in the standings; the uppermost balcony.

adj. At, or nearest the top of something.

ad. In the highest position.

adj. Highest in place, position, rank, power, or the like; upmost; supreme.

Highest in place; first in precedence: as, the uppermost seats.

Highest in power; predominant; most powerful; first in force or strength.

In the highest position or place; also, first in a series or in order of time.

First in order of precedence.

ad. in or into the highest position

ad. in or into the most prominent position, as in the mind

adj. at or nearest to the top

"The conclusion that three dice were deliberately placed with six uppermost is then a personal, not a statistical conclusion."

top   

upmost    supreme    highest   

topmost    lowermost    upper    outermost    innermost    north    loftiest    semicircular    right-hand    nether