In a high manner, or to a high degree; very much; as, highly esteemed.

to a high degree or extent; favorably or with much respect; "highly successful"; "He spoke highly of her"; "does not think highly of his writing"; "extremely interesting"

Uranium enriched to at least 20% U-235. (That in weapons is about 90% U-235.)

suggested by us. This items description is more complete on the BeBeSounds page

at a high rate or wage; "highly paid workers"

in a high position or level or rank; "details known by only a few highly placed persons"