out of phase (?.)
- amplitude
- antinode
- crest
- de Broglie wave
- diffraction
- electromagnetic radiation
- electromagnetic wave
- frequency
- frequency band
- frequency spectrum
- guided wave
- ill-considered
- ill-seasoned
- ill-timed
- improper
- in phase
- inappropriate
- inauspicious
- inconvenient
- inexpedient
- infelicitous
- inopportune
- intempestive
- interference
- intrusive
- irrelevant
- late
- light
- longitudinal wave
- mal a propos
- malapropos
- mechanical wave
- mistimed
- node
- off base
- out of line
- out of time
- period
- periodic wave
- premature
- radio wave
- ray
- reinforcement
- resonance
- resonance frequency
- seismic wave
- shock wave
- sound wave
- surface wave
- tidal wave
- too late
- too soon
- transverse wave
- trough
- unbefitting
- unfavorable
- unfit
- unfitting
- unfortunate
- unhandy
- unhappy
- unlucky
- unpropitious
- unready
- unripe
- unseasonable
- unsuitable
- untimely
- untoward
- wave
- wave equation
- wave motion
- wave number
- wavelength
- wrong
