fi·du·ci·ar·y

[fi-doo-shee-er-ee, -dyoo-]

-noun, plural: -ar·ies

1. Law: a person to whom property or power is entrusted for the benefit of another

–adjective
2. Law: of or pertaining to the relation between a fiduciary and his or her principal, e.g. fiduciary capacity; a fiduciary duty
3. of, based on, or in the nature of trust and confidence, as in public affairs, e.g. a fiduciary obligation of government employees
4. depending on public confidence for value or currency, as fiat money

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febrile

fe·brile

[fee-bruhl, feb-ruhl or, especially Brit., fee-brahyl]

–adjective
pertaining to or marked by fever; feverish.

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faille

[fahyl, feyl; Fr. fa-yuh]

–noun
a soft, transversely ribbed fabric of silk, rayon, or lightweight taffeta.

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fribble

frib·ble

[frib-uhl]

-verb, -bled, -bling, (used without object)
1. to act in a foolish or frivolous manner; trifle.

–verb (used with object)
2. to waste foolishly (often fol. by away ): He fribbled away one opportunity after another.

–noun
3. a foolish or frivolous person; trifler.
4. anything trifling or frivolous.
5. frivolousness.

–adjective
6. frivolous; foolish; trifling.

*here we have a word that is a noun, adjective, intransitive and transitive verb. Why it didn't spring for adverb is beyond me