onerous /onˈə-rəs or ōˈnə-rəs/

1. Burdensome
2. Oppressive

onˈerously adverb

• echocardiographs
• echocardiography
• echo chamber
• echo chambers
• echoed
• echoencephalogram
• echoencephalograms
• echoencephalography
• echoer
• echoers
• echoes
• echoey
• echogram
• echograms
• echograph
• echographs
• echoic
• echoically
• echoing
• echoise
• echoised
• echoises
• echoising
• echoism
• echoisms