radarless
Lacking detection equipment
Without radar—the detection system that uses radio waves to locate objects.
Radarless describes aircraft, vessels, or vehicles operating without this equipment, whether by design, malfunction, or era: The radarless fishing boat navigated by sight alone.
The word appears in historical contexts about early aviation or naval operations before radar became standard.
Out in open
- defenselessWithout means to resist
- unprotectedWithout safeguard or shield
- unshieldedLacking protective barrier
- undefendedLacking protective measures
susceptible · endangered · at-risk · precarious · unsafe · helpless · open · assailable
Not discovered yet
- hiddenKept out of sight
- unseenNot perceived visually
- invisibleCannot be seen
- obscuredMade hard to perceive
concealed · shrouded · veiled · camouflaged · masked · unnoticed · indiscernible · unrevealed
Written instructions for use
- analogComparable equivalent
- low-techNot electronically complex
- rudimentaryIn simplest possible form
- basicFundamental in nature
old-school · traditional · mechanical · unsophisticated · antiquated · stripped-down · bare-bones · simple
Innate behavioral tendency
- guessworkConclusions drawn without proof
- estimationApproximate value judgment
- judgementFormal ruling or opinion
- perceptionMental interpretation of stimuli
intuition · guesstimate · feel · sensing · seat-of-pants · hunch · approximation · eyeballing
Of the sky above
- pilotageShip navigation expertise
- compassDevice showing cardinal directions
- sextantMaritime angular measurement device
- astrolabeAncient altitude-measuring instrument
landmarks · wayfinding · seat-of-pants · VFR · bearings
exposed
Out in open
- defenselessWithout means to resist
- unprotectedWithout safeguard or shield
- unshieldedLacking protective barrier
undefended · susceptible · endangered · at-risk · precarious · unsafe · helpless · open · assailable · targetable
undetected
Not discovered yet
obscured · concealed · shrouded · veiled · camouflaged · masked · unnoticed · indiscernible · unrevealed · dark
manual
Written instructions for use
- analogComparable equivalent
- low-techNot electronically complex
- rudimentaryIn simplest possible form
basic · old-school · traditional · mechanical · unsophisticated · antiquated · stripped-down · bare-bones · simple · unequipped
instinct
Innate behavioral tendency
- guessworkConclusions drawn without proof
- estimationApproximate value judgment
- judgementFormal ruling or opinion
perception · intuition · guesstimate · feel · sensing · seat-of-pants · hunch · approximation · eyeballing · rule-of-thumb
celestial
Of the sky above
- pilotageShip navigation expertise
- compassDevice showing cardinal directions
- sextantMaritime angular measurement device
astrolabe · landmarks · wayfinding · seat-of-pants · VFR · bearings