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 (184) female_domination (10326)
cuckoldry (0) cheating (572)
bi (14) bisexual (4042)
hands_free (0) hands-free (10654)
handsfree (17) hands-free (10654)
cum_in_anus (5) cum_in_ass (55386)
little_penis (14) small_penis (3906)
strap-on (6) strapon (5736)
one_leg_up (2353) raised_leg (17099)
naked (309) nude (565847)
spread (16) spreading (147496)
spreading_butt (23) spread_butt (6496)
spread_ass (80) spread_butt (6496)
spreading_ass (9) spread_butt (6496)
spread_pussy (11767) spreading_pussy (23)
spreading_legs (0) spread_legs (119763)
erection (353213) erect (3471)
half-erect (6833) semi-erect (1064)
bound (73844) bondage (53877)
(2218) <3 (119447)
muscles (48103) muscle (3168)
legend_of_zelda (210) the_legend_of_zelda (9667) obviously the same, but both tags are used
anamoon (0) auramoonstar (0) personague querido mio
pokemon (522) pokémon (241740)
pokèmon (12) pokémon (241740)
doctor_whooves_(mlp) (277) doctor_whoof_(mlp) (472) Same character, different spellings.
cream_pie (60) creampie (38)
invalid_color (8587) invalid_tag (47469)
twinkle_sez (3) twinkle-sez (1722)
m/m/f (0) male/male/female (52)
herm_on_male (49) herm/male (1536)
tit_job (5) titfuck (14189)
breastjob (6) titfuck (14189)
fat (1818) obese (10776) combine the catagories
herm (22957) intersex (111617) 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 (1536) intersex/male (10936)
herm/female (883) intersex/female (12362)
futanari (479) intersex (111617)
bionic (32) cybernetics (4946) The alias is a broader, more up-to-date synonym of the tag.
3_eyes (491) three_eyes (21)
biomechanical (37) cybernetics (4946) They both refer to the same thing
gay (59681) male/male (164996) e621 tagging
straight (61721) male/female (186925) e621 tagging
lesbian (14671) female/female (30260) e621 tagging
udders (2805) udder (6)
ahri_(lol) (0) ahri (1088) Same character
pokemorph (13) pokémorph (14661)
tits (1515) breasts (768295) Same thing
boobs (196) breasts (768295) same thing
futa (0) futanari (479) same thing