Noun has 3 senses

• jejuneness(n = noun.state) callowness, juvenility - lacking and evidencing lack of experience of life;

Derived form adjective jejune₂

• jejuneness(n = noun.attribute) jejunity, tameness, vapidity, vapidness - the quality of being vapid and unsophisticated;

Derived form adjective jejune₃

• jejuneness(n = noun.attribute) jejunity - quality of lacking nutritive value;

Derived form adjective jejune₁