The bulk update request #11534 is pending approval.

create alias anus_spreading (0) -> spread_anus (18497)
create alias spreading_arms (9) -> spread_arms (4114)
create alias cloaca_spread (0) -> spread_cloaca (625)
create alias cloaca_spreading (0) -> spread_cloaca (625)
create alias spreading_fingers (2) -> spread_fingers (194)
create alias fingers_spread (77) -> spread_fingers (194)
create alias leg_spreading (0) -> spread_legs (333684)
create alias legs_spreading (0) -> spread_legs (333684)
create alias toe_spread (4) -> spread_toes (6580)
create alias spreading_wing (0) -> spread_wings (19021)
create alias wing_spread (0) -> spread_wings (19021)

Reason: Aliases away synonymous or singular versions of various spreading tags. All of these have seen use except cloaca_spreading, which is only included for completeness.