once (adjective, adverb) once: in the past; occurred one time only
Sinonime: abnormal, amorphic, amorphous, anomalous, assymetrical, baggy, deformed, disfigured, embryonic, formless, ill-formed, inchoate, indefinite, indeterminate, indistinct, invisible, irregular, malformed, misshapen, mutilated, nebulous, undeveloped, unformed, ungraceful, unmade, unshapely, unstructured, unsymmetrical, vague, without character, without form
Antonime: never