uninterrupted (adj.)
- ageless
- articulated
- assiduous
- ceaseless
- connected
- consecutive
- consistent
- constant
- continual
- continued
- continuing
- continuous
- cyclical
- dateless
- diligent
- direct
- dogged
- endless
- enduring
- eternal
- even
- everlasting
- faithful
- featureless
- flat
- horizontal
- immediate
- immemorial
- immutable
- inalterable
- incessant
- indefatigable
- indestructible
- indomitable
- industrious
- infinite
- insistent
- interminable
- invincible
- irreversible
- joined
- lasting
- level
- lineal
- linear
- linked
- loyal
- monotonous
- never-ending
- nonstop
- obstinate
- one-way
- orderly
- oscillating
- patient
- perdurable
- perennial
- periodic
- permanent
- perpetual
- persevering
- persistent
- persisting
- pertinacious
- plodding
- preoccupied
- rapid
- rapt
- rectilineal
- rectilinear
- recurrent
- regular
- relentless
- repeated
- repetitive
- resolute
- right
- round-the-clock
- running
- seamless
- sedulous
- sempiternal
- sequent
- sequential
- serial
- serried
- single-minded
- sleepless
- smooth
- stable
- staccato
- steadfast
- steady
- straight
- straightaway
- straightforward
- streamlined
- stubborn
- sustained
- tenacious
- through
- tight
- timeless
- tireless
- true
- unbending
- unbent
- unbowed
- unbroken
- unceasing
- unchanging
- unconquerable
- uncurved
- undaunted
- undeviating
- undifferentiated
- undiscouraged
- undistorted
- unending
- unfailing
- unfaltering
- unflagging
- unflinching
- unidirectional
- uniform
- unrelenting
- unrelieved
- unremitting
- unsleeping
- unswerving
- untiring
- unturned
- unvarying
- unwavering
- unwearied
- unwearying
- upright
- vertical