"broadest" in the adjective sense
1. wide, broad
having great (or a certain) extent from one side to the other
"wide roads"
"a wide necktie"
"wide margins"
"three feet wide"
"a river two miles broad"
"broad shoulders"
"a broad river"
2. across-the-board, all-embracing, all-encompassing, all-inclusive, blanket, broad, encompassing, extensive, panoptic, wide
broad in scope or content
"across-the-board pay increases"
"an all-embracing definition"
"blanket sanctions against human-rights violators"
"an invention with broad applications"
"a panoptic study of Soviet nationality"- T.G.Winner
"granted him wide powers"
3. broad, unspecific
not detailed or specific
"a broad rule"
"the broad outlines of the plan"
"felt an unspecific dread"
4. broad, unsubtle
lacking subtlety obvious
"gave us a broad hint that it was time to leave"
5. broad, full
being at a peak or culminating point
"broad daylight"
"full summer"
6. broad, spacious, wide
very large in expanse or scope
"a broad lawn"
"the wide plains"
"a spacious view"
"spacious skies"
7. broad
of speech) heavily and noticeably regional
"a broad southern accent"
8. broad, large-minded, liberal, tolerant
showing or characterized by broad-mindedness
"a broad political stance"
"generous and broad sympathies"
"a liberal newspaper"
"tolerant of his opponent's opinions"
Source: WordNet® (An amazing lexical database of English)
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