operate - control, use, work, function⏎
questionable - doubt, dishonest, wrong, disreputable⏎
regress - recede, fall back, make or become less advanced⏎
parity - similarity, being equal, balance, equality⏎
option - choice, decision, pick⏎
proposition - plan of action, business idea⏎
pilfer - steal, thieve, rob⏎
regular - frequent, usual, standard⏎
pointer - sign, indication, indicator⏎