Verbseoul.
ㄹ stem (adj)
서툴다seotuldacontraction of 서투르다 (seotureuda)

To say contraction of 서투르다 (seotureuda) politely in the present tense, use 서툴어요 (suh-too-ruh-yoh). Below is the full conjugation of 서툴다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
서툴어
suh-too-ruh
서툴어요
suh-too-ruh-yoh
서툽니다
suh-toom-nee-dah
Past
서툴었어
suh-too-ruh-ssuh
서툴었어요
suh-too-ruh-ssuh-yoh
서툴었습니다
suh-too-ruh-sseum-nee-dah
Future
서툴 거야
suh-tool- -guh-yah
서툴 거예요
suh-tool- -guh-yae-yoh
서툴 겁니다
suh-tool- -guhm-nee-dah

Other useful forms

Command Polite (세요)
서투세요
suh-too-sae-yoh
Suggestion / Let's Polite (요)
서툴어요
suh-too-ruh-yoh
Question Polite (요)
서툴어요?
suh-too-ruh-yoh-?
Connective “and” — (고)
서툴고
suh-tool-goh
Conditional “if” — (면)
서툴면
suh-tool-myuhn
Noun form — (기)
서툶
suh-toom