1) Frilly 2) Illogical 3) Inconsequent 4) Insignificant 5) Little 6) Mere 7) Minor 8) Nugatory 9) Petty 10) Slight 11) Small 12) Trivial 13) Unconsequential 14) Unimportant 15) Unlogical 
• (a.) Not regularly following from the premises; hence, irrelevant; unimportant; of no consequence.
In·con`se·quen'tial adjective Not regularly following from the premises; hence, irrelevant; unimportant; of no consequence. Chesterfield. -- 
[adj] - not following logically as a consequence
adjective not following logically as a consequence
of little or no importance; insignificant; trivial. · inconsequent; illogical. · irrelevant.
lacking worth or importance lacking worth or importance