Synonyms of extensions

1 Syllable
sweep, branch, span, stretch, wing, reach, spread, arm
2 Syllables
annex, purview, compass, stretching, delay, adjunct, extent, radius, orbit, scope
3 Syllables
addendum, addition, lengthening, continuing, increase, protraction, production, broadening, distension, widening, appendix, expansion, supplement
4 Syllables
augmentation, postponement, prolongation, dilatation, development, elongation, appendage
5 Syllables
amplification