Crossword puzzle clue "four letter word aptly"

Four-letter word, aptly

Word aptly represented by four black squares in this puzzle

R. Kelly hit whose last title word is aptly rhymed with "sky" in the lyrics ... and a hint to the starts of the other four longest puzzle answers

Angle irons graphically represented by four sets of black squares in this grid, and by letter formations starting in the four longest answers

Joins forces, or the hidden four-letter words in four Down answers

Every other letter of "repast," aptly

Collection consisting of four plates, four saucers, four bowls, etc.

Body part whose parts are aptly found at the bottom of this puzzle's four longest answers