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 (11080)
cuckoldry (0) cheating (569)
bi (14) bisexual (4181)
hands_free (0) hands-free (11145)
handsfree (17) hands-free (11145)
cum_in_anus (5) cum_in_ass (58877)
little_penis (19) small_penis (4306)
strap-on (6) strapon (5961)
one_leg_up (3133) raised_leg (18242)
naked (315) nude (589627)
spread (19) spreading (155534)
spreading_butt (24) spread_butt (7380)
spread_ass (78) spread_butt (7380)
spreading_ass (9) spread_butt (7380)
spread_pussy (12568) spreading_pussy (25)
spreading_legs (2) spread_legs (126387)
erection (388012) erect (1)
half-erect (7714) semi-erect (565)
bound (77081) bondage (55646)
(2187) <3 (128950)
muscles (48078) muscle (1589)
legend_of_zelda (209) the_legend_of_zelda (10206) obviously the same, but both tags are used
anamoon (0) auramoonstar (0) personague querido mio
pokemon (551) pokémon (256440)
pokèmon (13) pokémon (256440)
doctor_whooves_(mlp) (288) doctor_whoof_(mlp) (468) Same character, different spellings.
cream_pie (60) creampie (41)
invalid_color (8606) invalid_tag (48913)
twinkle_sez (3) twinkle-sez (1741)
m/m/f (0) male/male/female (52)
herm_on_male (45) herm/male (1613)
tit_job (5) titfuck (14956)
breastjob (6) titfuck (14956)
fat (1572) obese (12102) combine the catagories
herm (23227) intersex (117948) 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 (1613) intersex/male (12298)
herm/female (935) intersex/female (13597)
futanari (473) intersex (117948)
bionic (41) cybernetics (5386) The alias is a broader, more up-to-date synonym of the tag.
3_eyes (606) three_eyes (19)
biomechanical (36) cybernetics (5386) They both refer to the same thing
gay (56643) male/male (181848) e621 tagging
straight (58434) male/female (207892) e621 tagging
lesbian (14052) female/female (33652) e621 tagging
udders (3100) udder (0)
ahri_(lol) (0) ahri (1114) Same character
pokemorph (13) pokémorph (15011)
tits (1482) breasts (814912) Same thing
boobs (192) breasts (814912) same thing
futa (0) futanari (473) same thing