Don't say 'whilst.' Just DONT. Don't ever say it. I can't stand it. There has been a HUGE upsurge in people saying "Whilst," like Douchebag Brad Pitt saying that acting is his job "whilst" architecture is his passion. (His passion apparently doesn't extend to actually making houses , you know, GOOD, causing him to agree to pay $20,500,000 to people who bought his terrible houses post-Katrina, only to suffer mold, leaks, electrical fires, and unclean water.) See? Only douchebag people who sell crappy houses to the poor say "whilst." Don't say it.