troubling
adjective
[ ˈtrʌblɪŋ ]
• causing distress or anxiety.
• "this is a troubling development for the prime minister"
trouble
verb
• cause distress or anxiety to.
• "he was not troubled by doubts"
Similar:
worry,
bother,
cause concern to,
concern,
disturb,
upset,
make anxious,
make uncomfortable,
make uneasy,
agitate,
distress,
grieve,
alarm,
perturb,
annoy,
irritate,
vex,
irk,
torment,
plague,
nag,
niggle,
gnaw at,
prey on someone's mind,
oppress,
weigh down,
burden,
afflict,
perplex,
puzzle,
bug,
Origin:
Middle English: from Old French truble (noun), trubler (verb), based on Latin turbidus (see turbid).