1) Alone 2) Alone at the prom 3) Alone on a Saturday night 4) Alone on Saturday night 5) At home on a Saturday night 6) Endless 7) Infinite 8) Like a wallflower 9) Like men at stag parties 10) Not bearing a date 11) Sempiternal 12) Sine die 13) Stag 14) Unaffected by time 1) Infinite 2) Sempiternal 3) Stag 4) Timeless 5) Unaltered 6) Undatable 7) Undated 
• (a.) Without date; having no fixed time.
Date'less adjective Without date; having no fixed time. 
[adj] - having no known beginning and presumably no end 2. [adj] - of such great duration as to preclude the possibility of being assigned a date 3. [adj] - not bearing a date 4. [adj] - unaffected by time
adjective not bearing a date; `a dateless letter`endless adjective having no known beginning and presumably no end; `the dateless rise and fall of the tides`; `time is endless`; `sempiternal truth`