drift·less 
(drĭftləs)
(drĭftləs)adj.
1. Having no purpose or perceptible trend; aimless or undirected: driftless summer days.
2. Random; stochastic.
- irrespective of
- irrespirable
- irresponsibility
- irresponsible
- irresponsibleness
- irresponsibly
- irresponsive
- irresponsively
- irresponsiveness
- irretrievability
- irretrievable
- irretrievableness
- irretrievably
- irreverence
- irreverent
- irreverently
- irreversibility
- irreversible
- irreversibleness
- irreversibly
- irrevocability
- irrevocable
- irrevocableness
- irrevocably
- irrigable