1) Annoying 2) Causing annoyance or worry 3) Causing trouble 4) Disagreeable 5) Galling 6) Irritating 7) Nettlesome 8) Pesky 9) Pestering 10) Pestiferous 11) Plaguey 12) Plaguy 13) Teasing 14) Troublesome 15) Troubling 16) Vexatious 17) Vexing 1) Annoying 2) Disagreeable 3) Disquieting 4) Galling 5) Inconvenient 6) Irritating 7) Maddening 8) Nettlesome 9) Pesky 10) Pestering 11) Plaguy 12) Troublesome 13) Unstling 14) Vexatious 15) Worrying 
• (a.) Vexatious; causing bother; causing trouble or perplexity; troublesome.
Both'er·some adjective Vexatious; causing bother; causing trouble or perplexity; troublesome. 
causing annoyance or worry; troublesome.