expand
1 amplify, augment, bloat, blow up, broaden, develop, dilate, distend, enlarge, extend, fatten, fill out, grow, heighten, increase, inflate, lengthen, magnify, multiply, prolong, protract, swell, thicken, wax, widen
2 diffuse, open (out), outspread, spread (out), stretch (out), unfold, unfurl, unravel, unroll
3 amplify, develop, dilate, elaborate, embellish, enlarge, expatiate, expound, flesh out, go into detail
Antonyms
1 & 2 close, condense, contract, decrease, reduce, shorten, shrink
3 abbreviate, condense, shorten