"operator or manager of a wharf," 1550s, from wharfage "provision or accommodation at wharves" (mid-15c.), from wharf + agent noun suffix -er (1) + unetymological -n- as in messenger.
wham
whammo
whammy
whangdoodle
wharf
wharfinger
what
whatchamacallit
whatever
whatnot
whatsoever