Yes, tilt is playable
...and is worth 5 points.
Found in the following dictionaries
Enable (Words with friends)
SOWPODS (Collins Scrabble Words)
OTCWL2014 (NASPA Word List 2014)
TWL06 (NASPA List 2006)
"Tilt" Definition
noun
A canopy or an awning for a boat, wagon, or cart.
A combat, especially a verbal one; a debate.
A medieval sport in which two mounted knights with lances charged together and attempted to unhorse one another.
A sloping surface, as of the ground.
A thrust or blow with a lance.
idiom
At full tilt Informal At full speed: a tank moving at full tilt.
verb-transitive
To aim or thrust (a lance) in a joust.
To cause to slope, as by raising one end; incline: tilt a soup bowl; tilt a chair backward.
To charge (an opponent); attack.
To cover (a vehicle) with a canopy or an awning.
To forge with a tilt hammer.
verb-intransitive
To engage in a combat or struggle; fight: tilting at injustices.
To favor one side over another in a dispute; lean: "His views tilt unmistakably to the Arab position” ( William Safire).
To fight with lances; joust.
To slope; incline. See Synonyms at slant.
verb
To cover or provide with a tilt.
To cause to have an inclination.
To point or thrust in or as if in a tilt .
To move or shift so as to lean or incline .
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