Extend in one or more directions:
— The dough expands.

synonym: spread out.

Roget 202: be broad etc. adj.; become broad, render broad etc. adj.; expand etc. 194; thicken, widen, calibrate.   

Become larger in size or volume or quantity.

Dutch: uitwerken, opentrekken, openzetten, vergroten, uitbreiden

Make bigger or wider in size, volume, or quantity.

Grow vigorously.

synonyms: boom, flourish, thrive.

Dutch: bloeien, floreren

Exaggerate or make bigger.

synonyms: amplify, blow up, inflate.

Roget 194: become larger etc. (large) etc. 192; expand, widen, enlarge, extend, grow, increase, incrassate^†, swell, gather; fill out; deploy, take open order, dilate, stretch, distend, spread; mantle, wax; grow up, spring up; bud, bourgeon [Fr.], shoot, sprout, germinate, put forth, vegetate, pullulate, open, burst forth; gain flesh, gather flesh; outgrow; spread like wildfire, overrun.    be larger than; surpass etc. (be superior) 33.    render larger etc. (large) etc. 192; expand, spread, extend, aggrandize, distend, develop, amplify, spread out, widen, magnify, rarefy, inflate, puff, blow up, stuff, pad, cram; exaggerate; fatten.    ... show more

Add details, as to an account or idea; clarify the meaning of and discourse in a learned way, usually in writing.

synonyms: dilate, elaborate, enlarge, expatiate, exposit, expound, flesh out, lucubrate.

Roget 322: rarefy, expand, dilate, subtilize^†.   

Roget 573: be diffuse etc. adj.; run out on, descant, expatiate, enlarge, dilate, amplify, expand, inflate; launch out, branch out; rant.    maunder, prose; harp upon etc. (repeat) 104; dwell on, insist upon.    digress, ramble, battre la campagne [Fr.], beat about the bush, perorate, spin a long yarn, protract; spin out, swell out, draw out; battologize^†.    ... show more

Dutch: uitweiden, verklaren, exponeren, uiteendoen, uiteenzetten

Expand the influence of.

synonym: extend.