Definify.com

Webster 1913 Edition

Adj.

Helpless; without aid.

Milton.

Adj.

Helpless; without aid; unsupported; undefended.

aidless ‎(comparative more aidless, superlative most aidless)

Without aid.
Without mechanical assistance.
Aidless navigation has the advantage of not requiring equipment but is much less accurate and more prone to becoming lost.

without aid

without mechanical assistance