Diffident
Shy, bashful, modest
Intruder
Trespasser, interloper, infiltrator
Wistful
Nostalgic, regretful yearning
Scowl
Frown, glower, grimace
Unbecoming
Unfitting, unsuitable, inappropriate
Confiscate
Seize, impound, commandeer
Secluded
Concealed, hidden, sequestered
Instantaneously
Instantly, immediately, forthwith
Explicit
Clear, obvious, straightforward
Disarray
Disorder, disorganization, chaos
Bewildered
Confused, puzzled
Gleefully
Joyfully, ecstatically, exuberantly
Ambulant
A patient who can walk
Indubitable
Unquestionable, indisputable, undeniable
Extricate
Free, release, disengage
Revulsion
Disgust, abhorrence, repugnance
Defecation
Excretion, discharge of feces
Aversive
Aloof, apathetic
Eruption
Discharge, emission
Influx
Inundation, inflow
Rectitude
Goodness, righteousness, morality
Contrive
Create, engineer, manufacture
Deliberation
Consideration, reflection, contemplation
Preoccupation
Concentration, engrossment, absorption
Affront
Insult, indignity, humiliation
Comprehensible
Understandable, intelligible
Articulated
Hinged, jointed, segmented