Yes, express is playable
...and is worth 17 points.
Found in the following dictionaries
Enable (Words with friends)
SOWPODS (Collins Scrabble Words)
OTCWL2014 (NASPA Word List 2014)
TWL06 (NASPA List 2006)
"Express" Definition
noun
A means of transport, such as a train, that travels rapidly and makes few or no stops before its destination.
A rapid, efficient system for the delivery of goods and mail.
Chiefly British A message delivered by special courier.
Chiefly British A special messenger.
Goods and mail conveyed by such a system.
adverb
By express delivery or transport.
adjective
Definitely and explicitly stated: their express wish. See Synonyms at explicit.
Direct, rapid, and usually nonstop: express delivery of packages; an express bus.
Of, relating to, or appropriate for rapid travel: express lanes on a freeway.
Particular; specific: an express plan.
Sent out with or moving at high speed.
verb-transitive
Genetics To cause (itself) to produce an effect or a phenotype. Used of a gene: The gene expressed itself under specific environmental conditions.
Genetics To manifest (a genetic trait): All the mice in the study expressed the defect.
Genetics To manifest the effects of (a gene): Half of the people who inherit the gene express it.
To convey or suggest a representation of; depict: The painting expresses the rage of war victims.
To make known the feelings or opinions of (oneself), as by statement or art.
verb
To give or convey a true impression of .
To make known the opinions or feelings of (oneself).
To give to the artistic or creative impulses or abilities of (oneself).
To represent by a sign or symbol .
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