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 (195) female_domination (11006)
cuckoldry (0) cheating (569)
bi (14) bisexual (4151)
hands_free (0) hands-free (11071)
handsfree (17) hands-free (11071)
cum_in_anus (5) cum_in_ass (58304)
little_penis (19) small_penis (4228)
strap-on (6) strapon (5922)
one_leg_up (3067) raised_leg (18029)
naked (316) nude (585267)
spread (17) spreading (154236)
spreading_butt (24) spread_butt (7240)
spread_ass (78) spread_butt (7240)
spreading_ass (9) spread_butt (7240)
spread_pussy (12440) spreading_pussy (25)
spreading_legs (1) spread_legs (125320)
erection (384732) erect (0)
half-erect (7643) semi-erect (574)
bound (76407) bondage (55156)
(2187) <3 (127644)
muscles (48082) muscle (1591)
legend_of_zelda (209) the_legend_of_zelda (10138) obviously the same, but both tags are used
anamoon (0) auramoonstar (0) personague querido mio
pokemon (551) pokémon (254261)
pokèmon (13) pokémon (254261)
doctor_whooves_(mlp) (285) doctor_whoof_(mlp) (468) Same character, different spellings.
cream_pie (60) creampie (41)
invalid_color (8604) invalid_tag (48509)
twinkle_sez (3) twinkle-sez (1738)
m/m/f (0) male/male/female (52)
herm_on_male (45) herm/male (1596)
tit_job (5) titfuck (14818)
breastjob (6) titfuck (14818)
fat (1584) obese (11946) combine the catagories
herm (23076) intersex (116969) 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 (1596) intersex/male (12085)
herm/female (933) intersex/female (13470)
futanari (473) intersex (116969)
bionic (37) cybernetics (5322) The alias is a broader, more up-to-date synonym of the tag.
3_eyes (578) three_eyes (19)
biomechanical (35) cybernetics (5322) They both refer to the same thing
gay (56643) male/male (179485) e621 tagging
straight (58446) male/female (204862) e621 tagging
lesbian (14051) female/female (33171) e621 tagging
udders (3062) udder (0)
ahri_(lol) (0) ahri (1112) Same character
pokemorph (13) pokémorph (14917)
tits (1482) breasts (807851) Same thing
boobs (192) breasts (807851) same thing
futa (0) futanari (473) same thing