KEY: Useful.
SYN: Advantageous, profitable, helpful, serviceable, beneficial, available, adapted, suited, conducive.
ANT: Disadvantageous, unprofitable, obstructive, retardative, preventative, antagonistic, hostile, cumbersome, burdensome, unbeneficial, unavailable, inconducive, useless, fruitless, ineffectual.
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KEY: Useless, [See CUSTOM].
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KEY: Usher.
SYN: Herald, introduce, precede, announce.
ANT: Follow, attend, succeed.
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