You can suggest a new alias, but they must be approved by an administrator before they are activated.
An example of how to use this: (Neon_Genesis_Evangelion is the tag and Evangelion is the alias. Evangelion -> Neon_Genesis_Evangelion)


Alias To Reason
femdom (149) female_domination (6340)
cuckoldry (0) cheating (553)
bi (13) bisexual (3071)
hands_free (0) hands-free (7653)
handsfree (16) hands-free (7653)
cum_in_anus (3) cum_in_ass (38280)
little_penis (13) small_penis (2357)
strap-on (4) strapon (4257)
one_leg_up (1306) raised_leg (11939)
naked (229) nude (401126)
spread (14) spreading (106009)
spreading_butt (20) spread_butt (3480)
spread_ass (81) spread_butt (3480)
spreading_ass (9) spread_butt (3480)
spread_pussy (8025) spreading_pussy (18)
spreading_legs (0) spread_legs (87114)
erection (254083) erect (4340)
half-erect (4312) semi-erect (1077)
bound (51898) bondage (38985)
(2223) <3 (72076)
muscles (48186) muscle (3188)
legend_of_zelda (200) the_legend_of_zelda (6510) obviously the same, but both tags are used
anamoon (0) auramoonstar (0) personague querido mio
pokemon (365) pokémon (155777)
pokèmon (11) pokémon (155777)
doctor_whooves_(mlp) (254) doctor_whoof_(mlp) (472) Same character, different spellings.
cream_pie (59) creampie (26)
invalid_color (7192) invalid_tag (37068)
twinkle_sez (3) twinkle-sez (1190)
m/m/f (0) male/male/female (36)
herm_on_male (49) herm/male (1092)
tit_job (5) titfuck (9760)
breastjob (5) titfuck (9760)
fat (1741) obese (6811) combine the catagories
herm (18446) intersex (74681) The tags "herm," "maleherm," and "cuntboy" (and a few others) all fall under the classification "intersex;" I wouldn't alias the other two as they are often excluded or searched seperately.
herm/male (1092) intersex/male (5676)
herm/female (562) intersex/female (6719)
futanari (476) intersex (74681)
bionic (21) cybernetics (2613) The alias is a broader, more up-to-date synonym of the tag.
3_eyes (63) three_eyes (21)
biomechanical (21) cybernetics (2613) They both refer to the same thing
gay (59680) male/male (93677) e621 tagging
straight (62215) male/female (102503) e621 tagging
lesbian (14454) female/female (17205) e621 tagging
udders (1792) udder (2)
ahri_(lol) (0) ahri (738) Same character
pokemorph (13) pokémorph (9880)
tits (1537) breasts (511583) Same thing
boobs (168) breasts (511583) same thing