Yes, use is playable
...and is worth 4 points.
Found in the following dictionaries
Enable (Words with friends)
SOWPODS (Collins Scrabble Words)
OTCWL2014 (NASPA Word List 2014)
TWL06 (NASPA List 2006)
"Use" Definition
noun
A liturgical form practiced in a particular church, ecclesiastical district, or community.
A purpose for which something is used: a tool with several uses; a pretty bowl, but of what use is it?.
Accustomed or usual procedure or practice.
Law Enjoyment of property, as by occupying or exercising it.
Law The arrangement establishing the equitable right to such benefits and profits.
verb-transitive
To avail oneself of; practice: use caution.
To conduct oneself toward; treat or handle: "the peace offering of a man who once used you unkindly” ( Laurence Sterne).
To put into service or apply for a purpose; employ.
To seek or achieve an end by means of; exploit: used their highly placed friends to gain access to the president; felt he was being used by seekers of favor.
To take or consume; partake of: She rarely used alcohol.
phrasal-verb
Use up To consume completely: used up all our money.
verb-intransitive
Used in the past tense followed by to in order to indicate a former state, habitual practice, or custom: Mail service used to be faster.
verb
To put into action or service avail oneself of.
To consume or take (as liquor or drugs) regularly.
To carry out a purpose or action by means of.
To expend or consume by putting to use.
To behave toward act with regard to.
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