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 (161) female_domination (7441)
cuckoldry (0) cheating (574)
bi (13) bisexual (3326)
hands_free (0) hands-free (8467)
handsfree (17) hands-free (8467)
cum_in_anus (3) cum_in_ass (43048)
little_penis (14) small_penis (2682)
strap-on (5) strapon (4642)
one_leg_up (1535) raised_leg (13021)
naked (245) nude (446403)
spread (14) spreading (118182)
spreading_butt (20) spread_butt (4201)
spread_ass (82) spread_butt (4201)
spreading_ass (9) spread_butt (4201)
spread_pussy (8951) spreading_pussy (18)
spreading_legs (0) spread_legs (96697)
erection (284557) erect (4124)
half-erect (5202) semi-erect (1072)
bound (58117) bondage (43563)
(2223) <3 (84506)
muscles (48188) muscle (3192)
legend_of_zelda (208) the_legend_of_zelda (7360) obviously the same, but both tags are used
anamoon (0) auramoonstar (0) personague querido mio
pokemon (386) pokémon (178478)
pokèmon (11) pokémon (178478)
doctor_whooves_(mlp) (259) doctor_whoof_(mlp) (472) Same character, different spellings.
cream_pie (60) creampie (33)
invalid_color (7830) invalid_tag (41611)
twinkle_sez (3) twinkle-sez (1339)
m/m/f (0) male/male/female (38)
herm_on_male (49) herm/male (1223)
tit_job (5) titfuck (10975)
breastjob (6) titfuck (10975)
fat (1756) obese (7747) combine the catagories
herm (19533) intersex (84230) 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 (1223) intersex/male (6965)
herm/female (646) intersex/female (8135)
futanari (469) intersex (84230)
bionic (24) cybernetics (3149) The alias is a broader, more up-to-date synonym of the tag.
3_eyes (85) three_eyes (21)
biomechanical (21) cybernetics (3149) They both refer to the same thing
gay (59694) male/male (111815) e621 tagging
straight (62232) male/female (122885) e621 tagging
lesbian (14462) female/female (20286) e621 tagging
udders (2084) udder (2)
ahri_(lol) (1) ahri (811) Same character
pokemorph (13) pokémorph (11351)
tits (1539) breasts (578996) Same thing
boobs (182) breasts (578996) same thing
futa (0) futanari (469) same thing